Refactor string comparisons to use single quotes

Updated `InlineQueryHandler.cs` and `TextMessageHandler.cs` to use single quotes for character comparisons in `StartsWith` and `EndsWith` method calls. This change improves code readability and consistency.

Author: bvdcode

Sources/TelegramBot/Handlers/InlineQueryHandler.cs

@@ -41,12 +41,13 @@ public InlineQueryHandler(IReadOnlyCollection<MethodInfo> controllerMethods, Upd
                         bool match = true;
                         for (int i = 0; i < controllerCommandParts.Length; i++)
                         {
-                            if (controllerCommandParts[i] != incomingCommandParts[i] && !controllerCommandParts[i].StartsWith("{") && !controllerCommandParts[i].EndsWith("}"))
+                            if (controllerCommandParts[i] != incomingCommandParts[i] && !controllerCommandParts[i].StartsWith('{') 
+                                && !controllerCommandParts[i].EndsWith('}'))
                             {
                                 match = false;
                                 break;
                             }
-                            if (controllerCommandParts[i].StartsWith("{") && controllerCommandParts[i].EndsWith("}"))
+                            if (controllerCommandParts[i].StartsWith('{') && controllerCommandParts[i].EndsWith('}'))
                             {
                                 _args.Add(incomingCommandParts[i]);
                             }

Sources/TelegramBot/Handlers/TextMessageHandler.cs

@@ -26,7 +26,7 @@ public TextMessageHandler(IReadOnlyCollection<MethodInfo> controllerMethods, Upd
             var message = update.Message;
             var parts = message.Text!.Split(' ');
             string command = parts[0];
-            if (!command.StartsWith("/"))
+            if (!command.StartsWith('/'))
             {
                 return null;
             }