added link to theme/config.php defaults

convention/directory-structure.rst

@@ -38,7 +38,7 @@ Let's take a closer look at each directory and file, and understand how it works
 * ``framework-customizations/theme/manifest.php`` - Contains an array with information about theme, accessible through ``fw()->theme->manifest->get('key');``.
   More details about the :doc:`theme manifest </manifest/theme>`.
 
-* ``framework-customizations/theme/config.php`` - Theme configuration array, accessible through ``fw()->theme->get_config('key');``.
+* ``framework-customizations/theme/config.php`` - Theme configuration array, accessible through ``fw()->theme->get_config('key');``. `Here <https://github.com/ThemeFuse/Unyson/blob/3b79926d5e09f7c9b2697444ffa8d4c9a39b7f5b/framework/core/components/theme.php#L156-L159>`__ are the default values.
 
 * ``framework-customizations/theme/options/`` - A directory containing option files: post types, taxonomies and theme settings page options.
   The framework will automatically pick them, display in admin pages and save the values in the database.