Reducing size of the discovery tab strings.

app/src/main/res/values/strings.xml

@@ -474,7 +474,7 @@
     <string name="relay_setup">Relays</string>
 
     <string name="discover_live">Live</string>
-    <string name="discover_community">Communities</string>
-    <string name="discover_chat">Chat Groups</string>
+    <string name="discover_community">Community</string>
+    <string name="discover_chat">Chats</string>
     <string name="community_approved_posts">Approved Posts</string>
 </resources>