Merge pull request tensorflow#33521 from tensorflow:rthadur-patch-1

PiperOrigin-RevId: 275559379
Change-Id: I02a582047eacbcfe3a3f84c8cc71cc3af39f233e

CONTRIBUTING.md

@@ -84,6 +84,10 @@ TensorFlow coding style.
     [tensorflow/addons](https://github.com/tensorflow/addons) to get some
     airtime before a decision is made regarding whether they are to be migrated
     to the core.
+*   As every PR requires several CPU/GPU hours of CI testing, we discourage
+    submitting PRs to fix one typo, one warning,etc. We recommend fixing the
+    same issue at the file level at least (e.g.: fix all typos in a file, fix
+    all compiler warning in a file, etc.)
 
 #### License