Disallow file edit

Hello,
Love the theme- thanks.
Just wanted to check if it’s ok for me to do the following and not mess anything up on my site (under ‘disable file editing’ in this link: https://www.wpbeginner.com/wordpress-security/#adminusername)

Add the following code in your wp-config.php file.

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// Disallow file edit
define( ‘DISALLOW_FILE_EDIT’, true );

Thanks so much