Added Citra.

communities.json

@@ -679,6 +679,14 @@
       "quote": "Discord both strengthened our community and dramatically improved discussion amongst the developers.",
       "inviteCode": "G7Qnnhy",
       "githubUrl": "https://github.com/nestjs"
+    },
+    {
+      "logo": "citra.png",
+      "title": "Citra",
+      "quote": "Discord is used to provide premium support for our users.",
+      "quoteSourceUrl": "https://citra-emu.org/help/reference/asking/",
+      "inviteCode": "citra",
+      "githubUrl": "https://github.com/citra-emu/"
     }
   ]
-}
+}