Capitalization

Author: jaywonchung

_config.yml

@@ -211,7 +211,7 @@ theme_config:
     Open Source: /open-source || fab fa-github-alt
     #GitHub: https://github.com/SymbioticLab || fab fa-github-alt
     # Wiki: https://symbiotic.eecs.umich.edu/wiki || fab fa-wikipedia-w
-    Join us: https://forms.gle/L3Syau9dBzi8eLxQ7 || fa fa-user-plus
+    Join Us: https://forms.gle/L3Syau9dBzi8eLxQ7 || fa fa-user-plus
     # Collaboration: https://docs.google.com/document/d/1mVPqfnqLz_CXVz8XyDLcB1BIlUyezY2A-t5mV33JZHw/edit?usp=sharing || fa fa-user-plus
 
   # Enable / Disable menu icons / item badges.