Whitespace change to test bots

TBR=santa

Change-Id: I32f9eaa4006c235064d077de47cf7ae48f881502
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1857220Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#64264}

tools/whitespace.txt

@@ -7,6 +7,6 @@ A Smi balks into a war and says:
 The doubles heard this and started to unbox.
 The Smi looked at them when a crazy v8-autoroll account showed up...
 The autoroller bought a round of Himbeerbrause. Suddenly.....
-The bartender starts to shake the bottles................
+The bartender starts to shake the bottles.................
 I can't add trailing whitespaces, so I'm adding this line.
 I'm starting to think that just adding trailing whitespaces might not be bad.