style/comments: fix typo

nathantypanski · nathantypanski · commit efec52d0053b · 2014-06-30T18:42:52.000-04:00
diff --git a/style/comments.md b/style/comments.md
@@ -32,7 +32,7 @@ short.
 ### Sentence structure
 
 All doc comments, including the summary line, should begin with a
-capital letter and ending with a period, question mark, or exclamation
+capital letter and end with a period, question mark, or exclamation
 point. Prefer full sentences to fragments.
 
 For example:
