docs: fix link to commit conventions (vuejs#1430)

Author: lucaswerkmeister

.github/CONTRIBUTING.md

@@ -35,7 +35,7 @@ Hi! I’m really excited that you are interested in contributing to Vue Test Uti
 
 ### Committing Changes
 
-Commit messages should follow the [commit message convention](./COMMIT_CONVENTION.md) so that changelogs can be automatically generated. Commit messages will be automatically validated upon commit. If you are not familiar with the commit message convention, you can use `yarn commit` instead of `git commit`, which provides an interactive CLI for generating proper commit messages.
+Commit messages should follow the [commit message convention](./COMMIT_CONVENTIONS.md) so that changelogs can be automatically generated. Commit messages will be automatically validated upon commit. If you are not familiar with the commit message convention, you can use `yarn commit` instead of `git commit`, which provides an interactive CLI for generating proper commit messages.
 
 ## Development Setup