Replace F extension with string interpolation

OpenRA.Mods.Common/Traits/ExplosionOnDamageTransition.cs

@@ -41,7 +41,7 @@ namespace OpenRA.Mods.Common.Traits
 
 			var weaponToLower = Weapon.ToLowerInvariant();
 			if (!rules.Weapons.TryGetValue(weaponToLower, out var weapon))
-				throw new YamlException("Weapons Ruleset does not contain an entry '{0}'".F(weaponToLower));
+				throw new YamlException($"Weapons Ruleset does not contain an entry '{weaponToLower}'");
 
 			WeaponInfo = weapon;
 		}