minor #13242 CS: add missing param names to @param annotation (xabbuh)

This PR was merged into the 2.3 branch.

Discussion
----------

CS: add missing param names to @param annotation

| Q             | A
| ------------- | ---
| Fixed tickets |
| License       | MIT

as stated by @stof [here](https://github.com/symfony/symfony/pull/12886#issuecomment-68626732)

Commits
-------

665825b add missing param names to @param annotation

src/Symfony/Component/Process/ProcessBuilder.php

@@ -166,7 +166,7 @@ class ProcessBuilder
      *
      * To disable the timeout, set this value to null.
      *
-     * @param float|null
+     * @param float|null $timeout
      *
      * @return ProcessBuilder
      *

src/Symfony/Component/Security/Core/Util/ClassUtils.php

@@ -48,7 +48,7 @@ class ClassUtils
     /**
      * Gets the real class name of a class name that could be a proxy.
      *
-     * @param string|object
+     * @param string|object $object
      *
      * @return string
      */