chore(changelog): fix changelog entry format

Author: Rajas55

CHANGELOG.md

@@ -76,7 +76,7 @@ Note that this project **does not** adhere to [Semantic Versioning](https://semv
 
 ### Fixed
 
-- Fixed keyword parsing issue where delimiters inside keywords were incorrectly split (#12810)
+- We fixed a keyword parsing issue where delimiters inside keywords were incorrectly split. (#12810)
 - We fixed an issue where pasted entries would sometimes end up in the search bar instead of the main table [#12910](https://github.com/JabRef/jabref/issues/12910)
 - We fixed an issue where warning signs were improperly positioned next to text fields containing capital letters. [#12884](https://github.com/JabRef/jabref/issues/12884)
 - We fixed an issue where the drag'n'drop functionality in entryeditor did not work [#12561](https://github.com/JabRef/jabref/issues/12561)