wpe: Set documentation caps

As the caps template can vary depending on the WPEBackend-FDO version found at build time, set a fixed template for the generate documentation.

assigned to @gstreamer-merge-bot

mentioned in commit philn/gst-plugins-bad@af7f1f53

added 2 commits

• 22a00d78 - 1 commit from branch gstreamer:master
• af7f1f53 - wpe: Set documentation caps

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assigned to @philn and unassigned @gstreamer-merge-bot

I couldn't merge this branch: CI failed!

assigned to @gstreamer-merge-bot and unassigned @philn

mentioned in commit philn/gst-plugins-bad@db0ab58e

added 12 commits

• af7f1f53...afdde9fa - 11 commits from branch gstreamer:master
• db0ab58e - wpe: Set documentation caps

Compare with previous version

merged

changed milestone to %1.17.2

mentioned in merge request !1402 (merged)