Update met config string (#41048)

* update config string met

* typo

* config strings

homeassistant/components/met/config_flow.py

@@ -47,7 +47,7 @@ class MetFlowHandler(config_entries.ConfigFlow, domain=DOMAIN):
                 return self.async_create_entry(
                     title=user_input[CONF_NAME], data=user_input
                 )
-            self._errors[CONF_NAME] = "name_exists"
+            self._errors[CONF_NAME] = "already_configured"
 
         return await self._show_config_form(
             name=HOME_LOCATION_NAME,

homeassistant/components/met/strings.json

@@ -12,6 +12,6 @@
         }
       }
     },
-    "error": { "name_exists": "Location already exists" }
+    "error": { "already_configured": "[%key:common::config_flow::abort::already_configured_service%]" }
   }
 }

tests/components/met/test_config_flow.py

@@ -91,7 +91,7 @@ async def test_flow_entry_already_exists(hass):
     )
 
     assert result["type"] == "form"
-    assert result["errors"]["name"] == "name_exists"
+    assert result["errors"]["name"] == "already_configured"
 
 
 async def test_onboarding_step(hass):