PEP 785: update title formatting

Co-authored-by: Hugo van Kemenade <1324225+hugovk@users.noreply.github.com>

Author: Zac-HD

peps/pep-0785.rst

@@ -1,5 +1,5 @@
 PEP: 785
-Title: New methods for easier handling of :class:`ExceptionGroup`\ s
+Title: New methods for easier handling of `ExceptionGroup`\ s
 Author: Zac Hatfield-Dodds <zac@zhd.dev>
 Sponsor: Gregory P. Smith <greg@krypto.org>
 Status: Draft