Update README.md

Author: cclauss

README.md

@@ -30,7 +30,7 @@ jobs:
 
 This action is released with semantic version numbers, but also tagged so the latest major release's tag always points to the latest release within the matching major version.
 
-Please feel free to use `uses: php-actions/phpstan@v3` to always run the latest version of v6, or `uses: php-actions/phpstan@v3.0.0` to specify the exact release.
+Please feel free to use `uses: php-actions/phpstan@v3` to always run the latest version of v3, or `uses: php-actions/phpstan@v3.0.0` to specify the exact release.
 
 Example
 -------