docs: add Telegram community link to footer

Author: datlechin

docs/docs.json

@@ -235,7 +235,8 @@
   "footer": {
     "socials": {
       "github": "https://github.com/datlechin/tablepro",
-      "facebook": "https://www.facebook.com/groups/tablepro"
+      "facebook": "https://www.facebook.com/groups/tablepro",
+      "telegram": "https://t.me/tablepro_app"
     }
   },
   "integrations": {