Polish source type for Gradle snippets

spring-boot-project/spring-boot-docs/src/docs/asciidoc/actuator/enabling.adoc

@@ -23,7 +23,7 @@ To add the actuator to a Maven based project, add the following '`Starter`' depe
 
 For Gradle, use the following declaration:
 
-[source,groovy,indent=0]
+[source,gradle,indent=0]
 ----
 	dependencies {
 		implementation 'org.springframework.boot:spring-boot-starter-actuator'

spring-boot-project/spring-boot-docs/src/docs/asciidoc/configuration-metadata/annotation-processor.adoc

@@ -22,7 +22,7 @@ With Maven the dependency should be declared as optional, as shown in the follow
 
 With Gradle, the dependency should be declared in the `annotationProcessor` configuration, as shown in the following example:
 
-[source,groovy,indent=0,subs="verbatim,quotes,attributes"]
+[source,gradle,indent=0,subs="verbatim,quotes,attributes"]
 ----
 	dependencies {
 		annotationProcessor "org.springframework.boot:spring-boot-configuration-processor"
@@ -31,7 +31,7 @@ With Gradle, the dependency should be declared in the `annotationProcessor` conf
 
 If you are using an `additional-spring-configuration-metadata.json` file, the `compileJava` task should be configured to depend on the `processResources` task, as shown in the following example:
 
-[source,groovy,indent=0,subs="verbatim,quotes,attributes"]
+[source,gradle,indent=0,subs="verbatim,quotes,attributes"]
 ----
 	compileJava.inputs.files(processResources)
 ----

spring-boot-project/spring-boot-docs/src/docs/asciidoc/deployment/installing.adoc

@@ -28,7 +28,7 @@ To create a '`fully executable`' jar with Maven, use the following plugin config
 
 The following example shows the equivalent Gradle configuration:
 
-[source,groovy,indent=0,subs="verbatim,quotes,attributes"]
+[source,gradle,indent=0,subs="verbatim,quotes,attributes"]
 ----
 	bootJar {
 		launchScript()

spring-boot-project/spring-boot-docs/src/docs/asciidoc/features/developing-auto-configuration.adoc

@@ -317,7 +317,7 @@ If you have defined auto-configurations directly in your application, make sure
 
 With Gradle 4.5 and earlier, the dependency should be declared in the `compileOnly` configuration, as shown in the following example:
 
-[source,groovy,indent=0,subs="verbatim,quotes,attributes"]
+[source,gradle,indent=0,subs="verbatim,quotes,attributes"]
 ----
 	dependencies {
 		compileOnly "org.springframework.boot:spring-boot-autoconfigure-processor"
@@ -326,7 +326,7 @@ With Gradle 4.5 and earlier, the dependency should be declared in the `compileOn
 
 With Gradle 4.6 and later, the dependency should be declared in the `annotationProcessor` configuration, as shown in the following example:
 
-[source,groovy,indent=0,subs="verbatim,quotes,attributes"]
+[source,gradle,indent=0,subs="verbatim,quotes,attributes"]
 ----
 	dependencies {
 		annotationProcessor "org.springframework.boot:spring-boot-autoconfigure-processor"

spring-boot-project/spring-boot-docs/src/docs/asciidoc/howto/build.adoc

@@ -37,7 +37,7 @@ TIP: See the {spring-boot-maven-plugin-docs}#goals-build-info[Spring Boot Maven
 
 The following example does the same with Gradle:
 
-[source,groovy,indent=0,subs="verbatim,attributes"]
+[source,gradle,indent=0,subs="verbatim,attributes"]
 ----
 	springBoot {
 		buildInfo()
@@ -69,7 +69,7 @@ To use it, add the following declaration to your POM:
 
 Gradle users can achieve the same result by using the https://plugins.gradle.org/plugin/com.gorylenko.gradle-git-properties[`gradle-git-properties`] plugin, as shown in the following example:
 
-[source,groovy,indent=0]
+[source,gradle,indent=0]
 ----
 	plugins {
 		id "com.gorylenko.gradle-git-properties" version "2.2.4"

spring-boot-project/spring-boot-docs/src/docs/asciidoc/howto/jedis-instead-of-lettuce.adoc

@@ -26,7 +26,7 @@ The following example shows how to do so in Maven:
 
 The following example shows how to do so in Gradle:
 
-[source,groovy,indent=0,subs="verbatim,quotes,attributes"]
+[source,gradle,indent=0,subs="verbatim,quotes,attributes"]
 ----
 	dependencies {
 		implementation('org.springframework.boot:spring-boot-starter-data-redis') {

spring-boot-project/spring-boot-docs/src/docs/asciidoc/howto/logging.adoc

@@ -148,7 +148,7 @@ The following example shows how to set up the starters in Maven:
 
 And the following example shows one way to set up the starters in Gradle:
 
-[source,groovy,indent=0,subs="verbatim,quotes,attributes"]
+[source,gradle,indent=0,subs="verbatim,quotes,attributes"]
 ----
 	dependencies {
 		compile 'org.springframework.boot:spring-boot-starter-web'

spring-boot-project/spring-boot-docs/src/docs/asciidoc/howto/properties-and-configuration.adoc

@@ -69,7 +69,7 @@ If that property is not set to `false`, these may be expanded by the build.
 ==== Automatic Property Expansion Using Gradle
 You can automatically expand properties from the Gradle project by configuring the Java plugin's `processResources` task to do so, as shown in the following example:
 
-[source,groovy,indent=0]
+[source,gradle,indent=0]
 ----
 	processResources {
 		expand(project.properties)

spring-boot-project/spring-boot-docs/src/docs/asciidoc/howto/traditional-deployment.adoc

@@ -29,7 +29,7 @@ If you use Maven and `spring-boot-starter-parent` (which configures Maven's war
 
 If you use Gradle, you need to modify `build.gradle` to apply the war plugin to the project, as follows:
 
-[source,groovy,indent=0,subs="verbatim,quotes,attributes"]
+[source,gradle,indent=0,subs="verbatim,quotes,attributes"]
 ----
 	apply plugin: 'war'
 ----
@@ -54,7 +54,7 @@ If you use Maven, the following example marks the servlet container (Tomcat, in
 
 If you use Gradle, the following example marks the servlet container (Tomcat, in this case) as being provided:
 
-[source,groovy,indent=0,subs="verbatim,quotes,attributes"]
+[source,gradle,indent=0,subs="verbatim,quotes,attributes"]
 ----
 	dependencies {
 		// …

spring-boot-project/spring-boot-docs/src/docs/asciidoc/howto/webserver.adoc

@@ -46,7 +46,7 @@ If you wish to use Jetty 10, which does support Servlet 4.0, override the `jetty
 
 The following Gradle example shows how to use Undertow in place of Reactor Netty for Spring WebFlux:
 
-[source,groovy,indent=0,subs="verbatim,quotes,attributes"]
+[source,gradle,indent=0,subs="verbatim,quotes,attributes"]
 ----
 	configurations.all {
 		resolutionStrategy.dependencySubstitution.all { dependency ->

spring-boot-project/spring-boot-docs/src/docs/asciidoc/using/devtools.adoc

@@ -17,7 +17,7 @@ To include devtools support, add the module dependency to your build, as shown i
 ----
 
 .Gradle
-[source,groovy,indent=0,subs="attributes"]
+[source,gradle,indent=0,subs="attributes"]
 ----
 	dependencies {
 		developmentOnly("org.springframework.boot:spring-boot-devtools")