docs: add missing alternative cfg file names (conventional-changelog#2728)

Author: Mouvedia

README.md

@@ -124,7 +124,7 @@ Check the [husky documentation](https://typicode.github.io/husky/#/?id=manual) o
 
 ## Config
 
-- Configuration is picked up from `commitlint.config.js`, `.commitlintrc.js`, `.commitlintrc.json`, or `.commitlintrc.yml` file or a `commitlint` field in `package.json`
+- Configuration is picked up from `commitlint.config.js`, `.commitlintrc.js`, `.commitlintrc`, `.commitlintrc.json`, `.commitlintrc.yml` file or a `commitlint` field in `package.json`
 - Packages: [cli](./@commitlint/cli), [core](./@commitlint/core)
 - See [Rules](./docs/reference-rules.md) for a complete list of possible rules
 - An example configuration can be found at [@commitlint/config-conventional](./@commitlint/config-conventional/index.js)

docs/guides-local-setup.md

@@ -15,7 +15,7 @@ npm install --save-dev @commitlint/{cli,config-conventional}
 echo "module.exports = { extends: ['@commitlint/config-conventional'] };" > commitlint.config.js
 ```
 
-Alternatively the configuration can be defined in `.commitlintrc.js`, `.commitlintrc.json`, or `.commitlintrc.yml` file or a `commitlint` field in `package.json`.
+Alternatively the configuration can be defined in a `commitlint.config.js`, `.commitlintrc.js`, `.commitlintrc`, `.commitlintrc.json`, `.commitlintrc.yml` file or a `commitlint` field in `package.json`.
 
 ## Install husky