docs: add tips for husky@5

README.md

@@ -46,6 +46,12 @@ npm install git-commit-msg-linter --save-dev
 
 **Just Install No Configurations Required** and your commit message is under linting from now on.
 
+For husky@5 it will ignore the `.git/hooks/commit-msg` so a `.husky/commit-msg` need to add manually:
+
+```sh
+npx husky add .husky/commit-msg ".git/hooks/commit-msg \$1"
+```
+
 ## Recommended Commit Message Format
 
 ```