Update setup/symfony_server.rst

Co-Authored-By: javiereguiluz <[email protected]>

Author: kunicmarko20

setup/symfony_server.rst

@@ -76,7 +76,7 @@ Selecting a Different PHP Version
 
 If you have multiple PHP versions installed in your computer, you can tell
 Symfony which one to use creating a file called ``.php-version`` at the project
-root dir:
+root directory:
 
 .. code-block:: terminal