Fix spelling of "ID" and sentence-casing in ovo_energy strings (#137329)

homeassistant/components/ovo_energy/strings.json

@@ -16,10 +16,10 @@
         "data": {
           "username": "[%key:common::config_flow::data::username%]",
           "password": "[%key:common::config_flow::data::password%]",
-          "account": "OVO account id (only add if you have multiple accounts)"
+          "account": "OVO account ID (only add if you have multiple accounts)"
         },
         "description": "Set up an OVO Energy instance to access your energy usage.",
-        "title": "Add OVO Energy Account"
+        "title": "Add OVO Energy account"
       },
       "reauth_confirm": {
         "data": {