[#6917] some tweaks after review

Author: xabbuh

components/finder.rst

@@ -82,7 +82,10 @@ directory to use for the search::
 Search in several locations by chaining calls to
 :method:`Symfony\\Component\\Finder\\Finder::in`::
 
+    // search inside *both* directories
     $finder->files()->in(array(__DIR__, '/elsewhere'));
+
+    // same as above
     $finder->in(__DIR__)->in('/elsewhere');
 
 Use wildcard characters to search in the directories matching a pattern::