Fix typo: it's => its

Co-authored-by: Zackery Spytz <[email protected]>

Author: Erlend Egeberg Aasland

Doc/whatsnew/3.10.rst

@@ -463,7 +463,7 @@ Deprecated
   (Contributed by Erlend E. Aasland in :issue:`42264`.)
 
 * ``sqlite3.enable_shared_cache`` is now deprecated, scheduled for removal in
-  Python 3.12.  The method is undocumented, and it's use is strongly
+  Python 3.12.  The method is undocumented, and its use is strongly
   discouraged by the SQLite3 documentation.  See `the SQLite3 docs
   <https://sqlite.org/c3ref/enable_shared_cache.html/>` for more details.  If
   shared cache must be used, open the database in URI mode using the