Update CHANGELOG.md

Author: jdnichollsc

CHANGELOG.md

@@ -24,10 +24,10 @@ in case of vulnerabilities.
 ### Added
 - **Android:** Migrate to AndroidX by [@jdnichollsc](https://github.com/jdnichollsc) ([8a083f2](https://github.com/proyecto26/react-native-inappbrowser/commit/8a083f24847ac5f49923c6217106628434634b4d)).
 - Start following [SemVer](https://semver.org) with git tags properly 😅.
-- Include a **CHANGELOG** to see the history of the changes of the project.
+- Include a **CHANGELOG.md** to see the history of the changes of the project.
 - Validate if `EventBus` of **Android** is registered before to unregister.
 - Include ESLint config for React Native.
-- Activating Open Collective ([#80](https://github.com/proyecto26/react-native-inappbrowser/pull/80))
+- Activating Open Collective ([#80](https://github.com/proyecto26/react-native-inappbrowser/pull/80)) and Create **CONTRIBUTING.md** to see how to contribute.
 
 ### Removed
 - **com.facebook.infer.annotation** dependency is not required anymore to build for **Android**.