Update README.md

Co-authored-by: Thibaut Barrère <thibaut.barrere@gmail.com>

Author: TuThoThai

README.md

@@ -131,4 +131,4 @@ _Upcoming: templates for Pull Request_
 - For any development work, it is recommended to use the latest 3-digit version of NeTEx XML Schema.
 
 ### Comprehensive version history
-The comprehensive versions history is available in [cCHANGELOG.md](https://github.com/NeTEx-CEN/NeTEx/blob/v2.0/CHANGELOG.md)
+The comprehensive versions history is available in [CHANGELOG.md](https://github.com/NeTEx-CEN/NeTEx/blob/v2.0/CHANGELOG.md)