[5.4] cs fixes

Author: nicolas-grekas

Helper/ProcessHelper.php

@@ -31,8 +31,6 @@ class ProcessHelper extends Helper
      * @param array|Process $cmd      An instance of Process or an array of the command and arguments
      * @param callable|null $callback A PHP callback to run whenever there is some
      *                                output available on STDOUT or STDERR
-     *
-     * @return Process
      */
     public function run(OutputInterface $output, $cmd, string $error = null, callable $callback = null, int $verbosity = OutputInterface::VERBOSITY_VERY_VERBOSE): Process
     {
@@ -96,8 +94,6 @@ public function run(OutputInterface $output, $cmd, string $error = null, callabl
      * @param callable|null $callback A PHP callback to run whenever there is some
      *                                output available on STDOUT or STDERR
      *
-     * @return Process
-     *
      * @throws ProcessFailedException
      *
      * @see run()