Update strings for Firefly III integration (home-assistant#158911)

Author: JC5

homeassistant/components/firefly_iii/strings.json

@@ -42,11 +42,11 @@
           "verify_ssl": "[%key:common::config_flow::data::verify_ssl%]"
         },
         "data_description": {
-          "api_key": "The API key for authenticating with Firefly",
+          "api_key": "The API key for authenticating with Firefly III",
           "url": "[%key:common::config_flow::data::url%]",
-          "verify_ssl": "Verify the SSL certificate of the Firefly instance"
+          "verify_ssl": "Verify the SSL certificate of the Firefly III instance"
         },
-        "description": "You can create an API key in the Firefly UI. Go to **Options > Profile** and select the **OAuth** tab. Create a new personal access token and copy it (it will only display once)."
+        "description": "You can create an API key in the Firefly III UI. Go to **Options > Profile** and select the **OAuth** tab. Create a new personal access token and copy it (it will only display once)."
       }
     }
   },
@@ -84,13 +84,13 @@
   },
   "exceptions": {
     "cannot_connect": {
-      "message": "An error occurred while trying to connect to the Firefly instance: {error}"
+      "message": "An error occurred while trying to connect to the Firefly III instance: {error}"
     },
     "invalid_auth": {
       "message": "An error occurred while trying to authenticate: {error}"
     },
     "timeout_connect": {
-      "message": "A timeout occurred while trying to connect to the Firefly instance: {error}"
+      "message": "A timeout occurred while trying to connect to the Firefly III instance: {error}"
     }
   }
 }