Fix timestamp regex

DeukBot4/MessageHandlers/CommandHandler/RequestStructure/ParameterMatcher.cs

@@ -47,7 +47,7 @@ namespace DeukBot4.MessageHandlers.CommandHandler.RequestStructure
                 case ParameterType.User:
                     return $" *(?:<@!*(?<{index}>\\d+)>|(?<{index}>\\d+)(?:$| |\n))";
                 case ParameterType.Timespan:
-                    return $" *(?<{index}>\\d+.*d*[smhd])";
+                    return $" *(?<{index}>\\d+\\.*d*[smhd])";
                 default:
                     throw new ArgumentOutOfRangeException(nameof(type), type, null);
             }