Tweak contributing doc

Author: Timer

CONTRIBUTING.md

@@ -142,9 +142,7 @@ By default git would use `CRLF` line endings which would cause the scripts to fa
 9. Wait for a long time, and it will get published. Don’t worry that it’s stuck. In the end the publish script will prompt for versions before publishing the packages.
 10. After publishing, create a GitHub Release with the same text as the changelog entry. See previous Releases for inspiration.
 
-Make sure to test the released version! If you want to be extra careful, you can publish a prerelease by running `npm run publish -- --npm-tag=next` instead of `npm run publish`.
-
-Optionally, you can cut a prerelease instead by running `npm run publish -- --canary=next --exact --cd-version patch --npm-tag=next`.
+Make sure to test the released version! If you want to be extra careful, you can publish a prerelease by running `npm run publish -- --canary=next --exact --cd-version patch --npm-tag=next` instead of `npm run publish`.
 
 ---