Update "Filter vertices by M value" and "Filter vertices by Z value" algs docs

[agiudiceandrea]

Goal:

Both "Filter vertices by M value" and "Filter vertices by Z value" algs will accept any spatial vector layer as input since QGIS 3.36

Fixes #8884.

Ticket(s): #

• Backport to LTR documentation is requested

[DelazJ]

I think you'll need to fix some line/polygon mention earlier in the alg description section. Also what about (start implementing) #8852 (comment)?

[agiudiceandrea]

I think you'll need to fix some line/polygon mention earlier in the alg description section.

Thanks! It was an oversight... I've now fixed also the description of the INPUT parameter. I don't see issues in the algorithms description.

[DelazJ]

line 3058 refers to line and polygon, while it should be all geometry types

[agiudiceandrea]

Thanks again...