cli/command: fix documentation for ResolveAuthConfig

This function no longer uses the /info endpoint to resolve the registry
to use. The documentation for this function was still referring to
the (once used) special registry for Windows images, which is no longer
in use, so update the docs to reflect reality :)

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>

Author: thaJeztah

cli/command/registry.go

@@ -49,9 +49,12 @@ func RegistryAuthenticationPrivilegedFunc(cli Cli, index *registrytypes.IndexInf
 	}
 }
 
-// ResolveAuthConfig is like registry.ResolveAuthConfig, but if using the
-// default index, it uses the default index name for the daemon's platform,
-// not the client's platform.
+// ResolveAuthConfig returns auth-config for the given registry from the
+// credential-store. It returns an empty AuthConfig if no credentials were
+// found.
+//
+// It is similar to [registry.ResolveAuthConfig], but uses the credentials-
+// store, instead of looking up credentials from a map.
 func ResolveAuthConfig(_ context.Context, cli Cli, index *registrytypes.IndexInfo) registrytypes.AuthConfig {
 	configKey := index.Name
 	if index.Official {