Fix typo in code review documentation.

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Review-Url: https://codereview.chromium.org/2684693007
Cr-Commit-Position: refs/heads/master@{#449369}
diff --git a/docs/code_reviews.md b/docs/code_reviews.md
index fb307e2..6efe906 100644
--- a/docs/code_reviews.md
+++ b/docs/code_reviews.md
@@ -172,7 +172,7 @@
 *
 ```
 
-The text `set noparent` it will stop owner propagation from parent directories.
+The text `set noparent` will stop owner propagation from parent directories.
 This is used for specialized code. In this example, only the two listed people
 are owners:
 ```