Fix user-facing strings in totalconnect (#144411)

- replace two inconsistent occurrences of camel-cased "TotalConnect" with "Total Connect"
- apply sentence-casing to all strings
- add a missing hyphen to "4-digit numer"

homeassistant/components/totalconnect/strings.json

@@ -2,7 +2,7 @@
   "config": {
     "step": {
       "user": {
-        "title": "Total Connect 2.0 Account Credentials",
+        "title": "Total Connect 2.0 account credentials",
         "description": "It is highly recommended to use a 'standard' Total Connect user account with Home Assistant. The account should not have full administrative privileges.",
         "data": {
           "username": "[%key:common::config_flow::data::username%]",
@@ -14,13 +14,13 @@
         }
       },
       "locations": {
-        "title": "Location Usercodes",
+        "title": "Location usercodes",
         "description": "Enter the usercode for this user at location {location_id}",
         "data": {
           "usercodes": "Usercode"
         },
         "data_description": {
-          "usercodes": "The usercode is usually a 4 digit number"
+          "usercodes": "The usercode is usually a 4-digit number"
         }
       },
       "reauth_confirm": {
@@ -41,13 +41,13 @@
     "abort": {
       "already_configured": "[%key:common::config_flow::abort::already_configured_account%]",
       "reauth_successful": "[%key:common::config_flow::abort::reauth_successful%]",
-      "no_locations": "No locations are available for this user, check TotalConnect settings"
+      "no_locations": "No locations are available for this user, check Total Connect settings"
     }
   },
   "options": {
     "step": {
       "init": {
-        "title": "TotalConnect Options",
+        "title": "Total Connect options",
         "data": {
           "auto_bypass_low_battery": "Auto bypass low battery",
           "code_required": "Require user to enter code for alarm actions"
@@ -62,11 +62,11 @@
   "services": {
     "arm_away_instant": {
       "name": "Arm away instant",
-      "description": "Arms Away with zero entry delay."
+      "description": "Arms away with zero entry delay."
     },
     "arm_home_instant": {
       "name": "Arm home instant",
-      "description": "Arms Home with zero entry delay."
+      "description": "Arms home with zero entry delay."
     }
   },
   "entity": {