Update .github/CODEOWNERS

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

Author: vstinner

.github/CODEOWNERS

@@ -687,7 +687,7 @@ peps/pep-0807.rst  @dstufft
 peps/pep-0809.rst  @zooba
 peps/pep-0810.rst  @pablogsal @DinoV @Yhg1s
 peps/pep-0811.rst  @sethmlarson @gpshead
-peps/pep-0814.rst  @vstinner, @corona10
+peps/pep-0814.rst  @vstinner @corona10
 # ...
 peps/pep-2026.rst  @hugovk
 # ...