Ignore docs merges too

These are generated by the includes.yml workflow

Author: kzu

.github/workflows/changelog.config

@@ -1,7 +1,7 @@
 usernames-as-github-logins=true
 issues_wo_labels=true
 pr_wo_labels=true
-exclude-labels=bydesign,dependencies,duplicate,question,invalid,wontfix,need info
+exclude-labels=bydesign,dependencies,duplicate,question,invalid,wontfix,need info,docs
 enhancement-label=:sparkles: Implemented enhancements:
 bugs-label=:bug: Fixed bugs:
 issues-label=:hammer: Other: