DOC: Get rid of garbage Unicode characters (mne-tools#11594)

Author: DimitriPapadopoulos

.github/config.yml

@@ -4,13 +4,13 @@
 
 # Comment to be posted to on first time issues
 newIssueWelcomeComment: >
-  Hello! 👋 Thanks for opening your first issue here! ❤️ We will try to get back to you soon. 🚴🏽‍♂️
+  Hello! 👋 Thanks for opening your first issue here! ❤️ We will try to get back to you soon. 🚴
 
 # Configuration for new-pr-welcome - https://github.com/behaviorbot/new-pr-welcome
 
 # Comment to be posted to on PRs from first time contributors in your repository
 newPRWelcomeComment: >
-  Hello! 👋 Thanks for opening your first pull request here! ❤️ We will try to get back to you soon. 🚴🏽‍♂️
+  Hello! 👋 Thanks for opening your first pull request here! ❤️ We will try to get back to you soon. 🚴
 
 # Configuration for first-pr-merge - https://github.com/behaviorbot/first-pr-merge