tvgids.tv how to limit description

Hello,
tvgids.tv is actually grabbing properly, but on this website actually every single description of the program finishes with an advertisement.

Could anyone help fixing this, please? The advert starts on the line with

== Sla Je Slag ==

and onwards.
So basically if someone could say how to stop grabbing description once you find ==, that would be great.

Thank you!

An example of TV with the advert is here https://www.tvgids.tv/tv/andere-tijden/24105921