en.json: fix syntax error in translations file.

custom_components/tuya_local/translations/en.json

@@ -144,7 +144,7 @@
                 "state_attributes": {
                     "hvac_mode": {
                         "state": {
-                            "fan_only": "Pause",
+                            "fan_only": "Pause"
                         }
                     }
                 }