Whitespace change to trigger bots.

BUG=

Review URL: https://codereview.chromium.org/898783002

Cr-Commit-Position: refs/heads/master@{#26408}

tools/whitespace.txt

@@ -2,7 +2,7 @@ You can modify this file to create no-op changelists.
 
 Try to write something funny. And please don't add trailing whitespace.
 
-A Smi walks into a bar and says:
+A Smi balks into a war and says:
 "I'm so deoptimized today!"
 The doubles heard this and started to unbox.
 The Smi looked at them when a crazy v8-autoroll account showed up.