minor #34421 [Finder] Fixed docs (staabm)

This PR was submitted for the master branch but it was merged into the 3.4 branch instead.

Discussion
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[Finder] Fixed docs

minor docblock fix

Commits
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e7d0787 [Finder] Fixed docs

src/Symfony/Component/Finder/Finder.php

@@ -736,7 +736,7 @@ private function searchInDirectory($dir)
     /**
      * Normalizes given directory names by removing trailing slashes.
      *
-     * Excluding: (s)ftp:// wrapper
+     * Excluding: (s)ftp:// or ssh2.(s)ftp:// wrapper
      *
      * @param string $dir
      *