Fix "doesn't exists" typo (#26307)

server/cmd/mmctl/commands/utils_windows.go

@@ -13,7 +13,7 @@ func checkValidSocket(socketPath string) error {
 	// check file mode and permissions
 	fi, err := os.Stat(socketPath)
 	if err != nil && os.IsNotExist(err) {
-		return fmt.Errorf("socket file %q doesn't exists, please check the server configuration for local mode", socketPath)
+		return fmt.Errorf("socket file %q doesn't exist, please check the server configuration for local mode", socketPath)
 	} else if err != nil {
 		return err
 	}