Polish formatting of log configuration file

1. Remove space before `/>` to keep consistency.
2. Capitalize `filters` for Log4j2.
3. Uppercase log level to keep consistency.

See gh-43322

spring-boot-project/spring-boot/src/main/resources/org/springframework/boot/logging/log4j2/log4j2-file.xml

@@ -25,15 +25,15 @@
 		</RollingFile>
 	</Appenders>
 	<Loggers>
-		<Logger name="org.apache.catalina.startup.DigesterFactory" level="error" />
-		<Logger name="org.apache.catalina.util.LifecycleBase" level="error" />
-		<Logger name="org.apache.coyote.http11.Http11NioProtocol" level="warn" />
-		<Logger name="org.apache.sshd.common.util.SecurityUtils" level="warn"/>
-		<Logger name="org.apache.tomcat.util.net.NioSelectorPool" level="warn" />
-		<Logger name="org.eclipse.jetty.util.component.AbstractLifeCycle" level="error" />
-		<Logger name="org.hibernate.validator.internal.util.Version" level="warn" />
-		<Logger name="org.springframework.boot.actuate.endpoint.jmx" level="warn"/>
-		<Root level="info">
+		<Logger name="org.apache.catalina.startup.DigesterFactory" level="ERROR"/>
+		<Logger name="org.apache.catalina.util.LifecycleBase" level="ERROR"/>
+		<Logger name="org.apache.coyote.http11.Http11NioProtocol" level="WARN"/>
+		<Logger name="org.apache.sshd.common.util.SecurityUtils" level="WARN"/>
+		<Logger name="org.apache.tomcat.util.net.NioSelectorPool" level="WARN"/>
+		<Logger name="org.eclipse.jetty.util.component.AbstractLifeCycle" level="ERROR"/>
+		<Logger name="org.hibernate.validator.internal.util.Version" level="WARN"/>
+		<Logger name="org.springframework.boot.actuate.endpoint.jmx" level="WARN"/>
+		<Root level="INFO">
 			<AppenderRef ref="Console"/>
 			<AppenderRef ref="File"/>
 		</Root>

spring-boot-project/spring-boot/src/main/resources/org/springframework/boot/logging/log4j2/log4j2.xml

@@ -10,21 +10,21 @@
 	<Appenders>
 		<Console name="Console" target="SYSTEM_OUT" follow="true">
 			<PatternLayout pattern="${sys:CONSOLE_LOG_PATTERN}" charset="${sys:CONSOLE_LOG_CHARSET}"/>
-			<filters>
+			<Filters>
 				<ThresholdFilter level="${sys:CONSOLE_LOG_THRESHOLD:-TRACE}"/>
-			</filters>
+			</Filters>
 		</Console>
 	</Appenders>
 	<Loggers>
-		<Logger name="org.apache.catalina.startup.DigesterFactory" level="error" />
-		<Logger name="org.apache.catalina.util.LifecycleBase" level="error" />
-		<Logger name="org.apache.coyote.http11.Http11NioProtocol" level="warn" />
-		<Logger name="org.apache.sshd.common.util.SecurityUtils" level="warn"/>
-		<Logger name="org.apache.tomcat.util.net.NioSelectorPool" level="warn" />
-		<Logger name="org.eclipse.jetty.util.component.AbstractLifeCycle" level="error" />
-		<Logger name="org.hibernate.validator.internal.util.Version" level="warn" />
-		<Logger name="org.springframework.boot.actuate.endpoint.jmx" level="warn"/>
-		<Root level="info">
+		<Logger name="org.apache.catalina.startup.DigesterFactory" level="ERROR"/>
+		<Logger name="org.apache.catalina.util.LifecycleBase" level="ERROR"/>
+		<Logger name="org.apache.coyote.http11.Http11NioProtocol" level="WARN"/>
+		<Logger name="org.apache.sshd.common.util.SecurityUtils" level="WARN"/>
+		<Logger name="org.apache.tomcat.util.net.NioSelectorPool" level="WARN"/>
+		<Logger name="org.eclipse.jetty.util.component.AbstractLifeCycle" level="ERROR"/>
+		<Logger name="org.hibernate.validator.internal.util.Version" level="WARN"/>
+		<Logger name="org.springframework.boot.actuate.endpoint.jmx" level="WARN"/>
+		<Root level="INFO">
 			<AppenderRef ref="Console"/>
 		</Root>
 	</Loggers>