fixup! ContainerRegistry: Add TarImageDestination

Author: euanh

Sources/containertool/containertool.swift

@@ -395,6 +395,7 @@ struct ContainerTool: AsyncParsableCommand {
 
 // Parse URL path arguments
 extension Foundation.URL: ArgumentParser.ExpressibleByArgument {
+    /// Construct a URL from an argument string
     public init?(argument: String) {
         self.init(fileURLWithPath: argument)
     }