Version-4.0-User-Upgrade-Guide: minor tweaks

Author: jrfnl

wiki/Version-4.0-User-Upgrade-Guide.md

@@ -283,7 +283,7 @@ CI scripts or git pre-commit hooks may be checking explicitly for specific exit
 <p align="right"><a href="#table-of-contents">back to top</a></p>
 
 
-### [Upcoming] Branch rename in the PHP_CodeSniffer repo
+### [Upcoming] Branch rename in the PHP_CodeSniffer repository
 
 Just before the final 4.0.0 release, the PHP_CodeSniffer `master` branch will be renamed to `3.x` and the default branch will change to `4.x`.
 
@@ -305,7 +305,7 @@ Example changeset:
 
 Relative file references like `xsi:noNamespaceSchemaLocation="./vendor/squizlabs/php_codesniffer/phpcs.xsd"` will continue to be valid.
 
-##### Referencing the main branches in the repo
+##### Referencing the main branches in the repository
 
 If you reference a development version of PHP_CodeSniffer in your `composer.json` file or in CI scripts, those references will need to be updated.  
 What to update these to, depends on your use-case.