minor #7985 Use of Setters and Getters (martin05)

This PR was submitted for the 3.3 branch but it was merged into the 2.7 branch instead (closes #7985).

Discussion
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Use of Setters and Getters

If I have already define getter for the $targetDir, I should use it.

Commits
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789ed43 Use of Setters and Getters

Author: weaverryan

controller/upload_file.rst

@@ -243,7 +243,7 @@ logic to a separate service::
         {
             $fileName = md5(uniqid()).'.'.$file->guessExtension();
 
-            $file->move($this->targetDir, $fileName);
+            $file->move($this->getTargetDir(), $fileName);
 
             return $fileName;
         }