Use correct product name for IntelliJ IDEA

.gitignore

@@ -38,7 +38,7 @@ bin
 .springBeans
 spring-*/src/main/java/META-INF/MANIFEST.MF
 
-# IDEA artifacts and output dirs
+# IntelliJ IDEA artifacts and output dirs
 *.iml
 *.ipr
 *.iws

CONTRIBUTING.md

@@ -120,7 +120,7 @@ source code into your IDE.
 The wiki pages
 [Code Style](https://github.com/spring-projects/spring-framework/wiki/Code-Style) and
 [IntelliJ IDEA Editor Settings](https://github.com/spring-projects/spring-framework/wiki/IntelliJ-IDEA-Editor-Settings)
-define the source file coding standards we use along with some IDEA editor settings we customize.
+define the source file coding standards we use along with some IntelliJ editor settings we customize.
 
 ### Reference Docs
 

import-into-eclipse.md

@@ -54,4 +54,4 @@ _When instructed to execute `./gradlew` from the command line, be sure to execut
 
 In any case, please do not check in your own generated `.classpath` file, `.project`
 file, or `.settings` folder. You'll notice these files are already intentionally in
-`.gitignore`. The same policy holds for IDEA metadata.
+`.gitignore`. The same policy holds for IntelliJ IDEA metadata.