Error following google font install

Hello all,

First off, I’m very new to this, just sort of feeling my way through, so please have mercy!

I am using a child theme and I’ve followed the instructions at:
http://kriesi.at/documentation/enfold/register-additional-google-fonts-for-theme-options/
… to the letter. Or at least I think I have.

Now whenever I try to even access my website I get the following displayed by the browser:

Parse error: syntax error, unexpected T_STRING, expecting ‘]’ in /var/sites/g/ghostsound.uk/public_html/wp-content/themes/enfold-child/functions.php on line 11

For reference, the function.php file of my child theme now reads as follows:

<?php

/*
* Add your own functions here. You can also copy some of the theme functions into this file. 
* WordPress will use those functions instead of the original functions then.
*/

add_filter( 'avf_google_heading_font', 'avia_add_heading_font');
function avia_add_heading_font($fonts)
{
$fonts[‘Permanent Marker’] = ‘Permanent Marker';
return $fonts;
}

add_filter( 'avf_google_content_font', 'avia_add_content_font');
function avia_add_content_font($fonts)
{

$fonts[‘Permanent Marker’] = 'Permanent Marker’;
return $fonts;
}

Can anybody tell me where I’ve gone wrong?