Update docs/development/pigs/pig-023.rst

Co-authored-by: Atreyee Sinha <asinha@ucm.es>

docs/development/pigs/pig-023.rst

@@ -106,7 +106,7 @@ developments. This process will require a detailed description in the developer
 Deprecation
 ===========
 
-API breaking changes can be introduced in feature and LTS releases. This changes must be clearly identified
+API breaking changes can be introduced in feature and LTS releases. These changes must be clearly identified
 in the release notes. To avoid abruptly changing the API between consecutive version, forecoming API
 changes and deprecation should be announced in the previous release. In particular, a deprecation warning
 system should be applied to warn users of future changes affecting their code.