Doc: Minor fix replacing "-" by ":" in whatsnew/3.14

Author: adorilson

Doc/whatsnew/3.14.rst

@@ -455,7 +455,7 @@ to attach to the remote process and send the PDB commands to it.
 
 .. _whatsnew314-pep758:
 
-PEP 758 – Allow except and except* expressions without parentheses
+PEP 758: Allow except and except* expressions without parentheses
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 The :keyword:`except` and :keyword:`except* <except_star>` expressions now allow