Merge pull request #16687 from jfrazelle/update-man8

ignore man8

.gitignore

@@ -30,8 +30,9 @@ docs/_build
 docs/_static
 docs/_templates
 docs/changed-files
-# generated by man/man/md2man-all.sh
+# generated by man/md2man-all.sh
 man/man1
 man/man5
+man/man8
 pyenv
 vendor/pkg/