Use modern string syntax.

OpenRA.Mods.Common/UtilityCommands/ExtractSettingsDocsCommand.cs

@@ -60,7 +60,7 @@ namespace OpenRA.Mods.Common.UtilityCommands
 			{
 				var fields = section.Value.GetType().GetFields();
 				if (fields.Length > 0 && fields.Where(field => field.GetCustomAttributes<DescAttribute>(false).Length > 0).Count() > 0)
-					Console.WriteLine("## {0}", section.Key);
+					Console.WriteLine($"## {section.Key}");
 				else
 					Console.WriteLine();
 
@@ -69,11 +69,11 @@ namespace OpenRA.Mods.Common.UtilityCommands
 					if (!field.HasAttribute<DescAttribute>())
 						continue;
 
-					Console.WriteLine("### {0}", field.Name);
+					Console.WriteLine($"### {field.Name}");
 					var lines = field.GetCustomAttributes<DescAttribute>(false).SelectMany(d => d.Lines);
 					foreach (var line in lines)
 					{
-						Console.WriteLine("{0}", line);
+						Console.WriteLine(line);
 						Console.WriteLine();
 					}
 
@@ -83,8 +83,8 @@ namespace OpenRA.Mods.Common.UtilityCommands
 						Console.WriteLine("**Default Value:** {0}", value);
 						Console.WriteLine();
 						Console.WriteLine("```yaml");
-						Console.WriteLine("{0}: ", section.Key);
+						Console.WriteLine($"{section.Key}: ");
-						Console.WriteLine("\t{0}: {1}", field.Name, value);
+						Console.WriteLine($"\t{field.Name}: {value}");
 						Console.WriteLine("```");
 					}
 					else

OpenRA.Mods.Common/UtilityCommands/ExtractTraitDocsCommand.cs

@@ -1,6 +1,6 @@
 #region Copyright & License Information
 /*
- * Copyright 2007-2021 The OpenRA Developers (see AUTHORS)
+ * Copyright 2007-2022 The OpenRA Developers (see AUTHORS)
  * This file is part of OpenRA, which is free software. It is made
  * available to you under the terms of the GNU General Public License
  * as published by the Free Software Foundation, either version 3 of
@@ -38,7 +38,7 @@ namespace OpenRA.Mods.Common.UtilityCommands
 			Console.WriteLine(
 				"This documentation is aimed at modders. It displays all traits with default values and developer commentary. " +
 				"Please do not edit it directly, but add new `[Desc(\"String\")]` tags to the source code. This file has been " +
-				"automatically generated for version {0} of OpenRA.", version);
+				$"automatically generated for version {version} of OpenRA.");
 			Console.WriteLine();
 
 			var doc = new StringBuilder();

OpenRA.Mods.Common/UtilityCommands/ExtractWeaponDocsCommand.cs

@@ -1,6 +1,6 @@
 #region Copyright & License Information
 /*
- * Copyright 2007-2021 The OpenRA Developers (see AUTHORS)
+ * Copyright 2007-2022 The OpenRA Developers (see AUTHORS)
  * This file is part of OpenRA, which is free software. It is made
  * available to you under the terms of the GNU General Public License
  * as published by the Free Software Foundation, either version 3 of
@@ -40,7 +40,7 @@ namespace OpenRA.Mods.Common.UtilityCommands
 				"This documentation is aimed at modders. It displays a template for weapon definitions " +
 				"as well as its contained types (warheads and projectiles) with default values and developer commentary. " +
 				"Please do not edit it directly, but add new `[Desc(\"String\")]` tags to the source code. This file has been " +
-				"automatically generated for version {0} of OpenRA.", version);
+				$"automatically generated for version {version} of OpenRA.");
 			Console.WriteLine();
 
 			var doc = new StringBuilder();