Fix regex to exclude Wikipedia links to image file pages

[vongrad]

The regex to exclude the Wikipedia links does not always work as if you visit a page in a different language, i.e. Danish, the link will look differently:
https://da.m.wikipedia.org/wiki/Fil:Danmark-locator.png

This will break the images when using the --inline cli option as it will instead try to base64 encode contents of https://da.m.wikipedia.org/wiki/Fil:Danmark-locator.png, which is an HTML page.

I propose that we change the regex as shown in the commit to take into account different languages.

[danburzo]

That's a good idea! I wonder if we should extend the regex to something like /wikipedia\.org\/wiki\/[a-z]+:/i to make sure we're not too general with the exclusion rule?

[vongrad]

Agreed, shall I change it in the commit?

[danburzo]

That would be great, if you don't mind!

[vongrad]

Fixed, please review.

[danburzo]

Awesome, thank you!