Update links in the README for better visibility

Signed-off-by: |7eter l-|. l3oling <peter.boling@gmail.com>

Author: pboling

README.md

@@ -283,7 +283,7 @@ hydra.run
 ### More Information
 
 * RubyDoc Documentation: [![Current release on RubyDoc.info][📜docs-cr-rd-img]][🚎yard-current] [![YARD on Galtzo.com][📜docs-head-rd-img]][🚎yard-head]
-* Mailing List/Google Group: 🤼 [OAuth Ruby Google Group][⛳gg-discussions]
+* Mailing List/Google Group: [![OAuth Ruby Google Group][⛳gg-discussions-img]][⛳gg-discussions]
 * Maintainer Blog: [![Maintainer Blog][🚂maint-blog-img]][🚂maint-blog]
 * Live ruby-oauth Chat: [![Live Chat on Discord][✉️discord-invite-img-ftb]][✉️discord-invite]