Dot appearing above widget area

Hi Kishor:

I am using your WP Custom Widget Area plugin. I created a widget called “post bottom ads” and put a text widget in it. But when I use the shortcode in the bottom of my posts, a small dot appears just above the text and when I “inspect this” for the CSS code it say li tag is applying there.

Please urgently help me as I need to remove this dot. See it on this page just above the last box requesting subscriber opt in: http://shobhaponnappa.com/car-brand-case-study-a-timely-audit-saves-the-day/

Is there any CSS code snippet I can put in (into custom css plugin that I have) to remove this dot? Thanks in advance for your help.

https://wordpress.org/plugins/wp-custom-widget-area/