Apply suggestion from @chalmerlowe

Author: chalmerlowe

CONTRIBUTING.rst

@@ -163,4 +163,4 @@ Before we can accept your pull requests you'll need to sign a Contributor Licens
 - **If you are an individual writing original source code** and **you own the intellectual property**, then you'll need to sign an `individual CLA <https://developers.google.com/open-source/cla/individual>`__.
 - **If you work for a company that wants to allow you to contribute your work**, then you'll need to sign a `corporate CLA <https://developers.google.com/open-source/cla/corporate>`__.
 
-You can sign these electronically (just scroll to the bottom of the CLA form). After that, we'll be able to accept your pull requests.
+You can sign these electronically (scroll to the bottom of the CLA form to sign). After that, we'll be able to accept your pull requests.