Replace F extension with string interpolation

OpenRA.Mods.Common/Lint/CheckSpriteBodies.cs

@@ -35,7 +35,7 @@ namespace OpenRA.Mods.Common.Lint
 				var wsbs = actorInfo.Value.TraitInfos<WithSpriteBodyInfo>();
 				foreach (var wsb in wsbs)
 					if (wsbs.Any(w => w != wsb && w.Name == wsb.Name))
-						emitError("Actor type `{0}` has more than one *SpriteBody with Name: {1}!".F(actorInfo.Key, wsb.Name));
+						emitError($"Actor type `{actorInfo.Key}` has more than one *SpriteBody with Name: {wsb.Name}!");
 			}
 		}
 	}