Update config_views.py

Corrected help text to advise using the country code GB for United Kingdom, instead of EN for England which does not work.

web/config_views.py

@@ -61,7 +61,7 @@ config_layout = dbc.Row(dbc.Col(className="col-md-12 col-lg-2 ml-2", children=[
                     placeholder="Enter your country code",
                 ),
                 dbc.FormText(
-                    "Example: FR for FRANCE or EN for England",
+                    "Example: FR for FRANCE or GB for United Kingdom",
                     color="secondary",
                 )
             ]
@@ -180,4 +180,4 @@ def finishOtp(n_clicks, code_pin, sms_code):  # pylint: disable=unused-argument
         except Exception as e:
             res = str(e)
             return dbc.Alert(res, color="danger")
-    raise PreventUpdate()
+    raise PreventUpdate()