touch file (#993)

1 line change on comment

Author: ChaoqunCHEN

firebase-installations/src/androidTest/java/com/google/firebase/installations/FisAndroidTestConstants.java

@@ -20,7 +20,7 @@
 
 public final class FisAndroidTestConstants {
   public static final String TEST_FID_1 = "cccccccccccccccccccccc";
-  /** Invalid FID. */
+  // Invalid FID.
   public static final String INVALID_TEST_FID = "invalid";
 
   public static final String TEST_PROJECT_ID = "777777777777";