Document maven-compiler-plugin override

Author: vy

log4j-parent/pom.xml

@@ -991,6 +991,9 @@
         </executions>
       </plugin>
 
+      <!-- REMOVE THIS `m-c-p` OVERRIDE with the next `logging-parent` update!
+           This is a temporary fix for the Error Prone `2.36.0` issue:
+           https://github.com/apache/logging-parent/commit/c98462c444eda72d5fe8e7a0b8112949142b7a0a -->
       <plugin>
         <groupId>org.apache.maven.plugins</groupId>
         <artifactId>maven-compiler-plugin</artifactId>