How do I avoid "geo:" is removed from links? I need to place on my site link with geo scheme:

&lt;a href="geo:44.1234124,43.14314321432"&gt;some location&lt;/a&gt;


But drupal cuts schema from link and i have following result:

&lt;a href="44.1234124,43.14314321432"&gt;some location&lt;/a&gt;


Is there any way to disable geo scheme filtering?

I'm using drupal 8.3.5, basic installation without any additional extensions(except autoinstalled during setup process).

UPD.
I using view that displays some fields of custom nodes as HTML list. 
Most of fields marked as "excluded from output" and for one field i'm using html output override like this:

&lt;a href="geo:{{ field_somefield }}"&gt;{{ field_linktitlefield }}&lt;/a&gt;


field_somefield and field_linktitlefield is a simple text.
You need to add geo as an allowed scheme. See https://blog.werk21.de/en/2017/06/06/change-list-valid-uri-schemes-drupal-8 for details.