docs: add missing author in the changelog (cf #417)

Author: BoboTiG

CHANGELOG.md

@@ -4,7 +4,7 @@ See Git checking messages for full history.
 
 ## 10.1.1.dev0 (2025-xx-xx)
 - Linux: check the server for Xrandr support version (#417)
-- :heart: contributors: @
+- :heart: contributors: @jholveck
 
 ## 10.1.0 (2025-08-16)
 - Mac: up to 60% performances improvement by taking screenshots at nominal resolution (e.g. scaling is off by default). To enable back scaling, set `mss.darwin.IMAGE_OPTIONS = 0`. (#257)