add what's new entry

Author: methane

Doc/whatsnew/3.14.rst

@@ -474,6 +474,11 @@ Other language changes
   explicitly overridden in the subclass.
   (Contributed by Tomasz Pytel in :gh:`132329`.)
 
+* The command line option :option:`-c` now automatically dedents its code
+  argument before execution. The auto-dedentation behavior mirrors
+  :func:`textwrap.dedent`.
+  (Contributed by Jon Crall and Steven Sun in :gh:`103998`.)
+
 .. _whatsnew314-pep765:
 
 PEP 765: Disallow return/break/continue that exit a finally block