Tighten the wording for sending a pull request.

PiperOrigin-RevId: 485036120
(cherry picked from commit 95d81fcc)

CONTRIBUTING.md

@@ -21,7 +21,7 @@ all of the information requested in the issue template.
 
 
 ## Pull requests
 ## Pull requests
 
 
-We will also consider high quality pull requests. These should normally merge
+We will also consider high quality pull requests. These should merge
 into the `main` branch. Before a pull request can be accepted you must submit
 into the `main` branch. Before a pull request can be accepted you must submit
 a Contributor License Agreement, as described below.
 a Contributor License Agreement, as described below.