[TYPO] in latest commit to categories plugin

I see this is not fixed yet, so when you will spend some time with that extension, please take also a look at those:

[05-Nov-2015 01:06:35 UTC] PHP Notice: Undefined index: categories_page_orderby in /home/wp-content/plugins/categories-for-anspress/categories-for-anspress.php on line 301
[05-Nov-2015 01:06:35 UTC] PHP Notice: Undefined index: categories_page_order in /home/wp-content/plugins/categories-for-anspress/categories-for-anspress.php on line 313
[05-Nov-2015 01:06:35 UTC] PHP Notice: Undefined index: categories_page_slug in /home/wp-content/plugins/categories-for-anspress/categories-for-anspress.php on line 321
[05-Nov-2015 01:06:35 UTC] PHP Notice: Undefined index: category_page_slug in /home/wp-content/plugins/categories-for-anspress/categories-for-anspress.php on line 330