docs: Fix typo in terminal improvements section of v3.14.2 release notes (#153)

Author: hannesrudolph

docs/update-notes/v3.14.2.md

@@ -11,7 +11,7 @@ This release introduces prompt caching for Gemini, user control over caching for
     *   **Why the checkbox?** This setting is provided as a temporary workaround for potential response delays sometimes observed with Google's caching mechanism when accessed via these two providers. Caching is *not* enabled by default for them.
     *   **Requesty:** Caching remains automatic for supported models via Requesty.
 
-## Terminal Improvments
+## Terminal Improvements
 
 *   Improved handling of terminal output containing backspace characters for cleaner display (thanks KJ7LNW!).