Update G1 Manifold regex

RhSolutions.MLModifiers/DrinkingWaterHeatingFittings/ManifoldG1.cs

@@ -6,7 +6,7 @@ namespace RhSolutions.MLModifiers.DrinkingWaterHeatingFittings;
 public class ManifoldG1 : DrinkingWaterHeatingFitting
 {
 	private static readonly Regex _portsCount =
-		new(@"([\b\D]|^)?(?<Ports>2|3|4)([\b\D]|$)");
+		new(@"\b(?<Ports>\d{1})\b");
 
 	protected override string _title => "Распределительный коллектор G1";
 
@@ -24,4 +24,4 @@ public class ManifoldG1 : DrinkingWaterHeatingFitting
 			return false;
 		}
 	}
-}
+}