fix: spelling

Author: Viyerelu23333

_docs/sysadmin/installation/version_notes/v22.10.XX.md

@@ -64,7 +64,7 @@ please follow the step below:
 
 For downgrading to HTTP/1.1, run `bash .setup/dev-upgrade-h2.sh down`
 
-The script should automatically handle the upgrade and issueing a self-signed
+The script should automatically handle the upgrading and issuing a self-signed
 certificate.  If your browser complains about the security, please head to
 [WebSocket](/developer/developing_the_php_site/websocket).