Replace @Override accidentally removed from a merge conflict

For https://github.com/bazelbuild/bazel/issues/6526.

PiperOrigin-RevId: 425899368
diff --git a/src/main/java/com/google/devtools/build/lib/rules/java/JavaCompileAction.java b/src/main/java/com/google/devtools/build/lib/rules/java/JavaCompileAction.java
index 82cb5a8..16e289b 100644
--- a/src/main/java/com/google/devtools/build/lib/rules/java/JavaCompileAction.java
+++ b/src/main/java/com/google/devtools/build/lib/rules/java/JavaCompileAction.java
@@ -546,6 +546,7 @@
       return onlyMandatoryOutput == null || onlyMandatoryOutput.equals(output);
     }
 
+    @Override
     public boolean stripOutputPaths() {
       return stripOutputPaths;
     }