Fix some images
Summary:
- https://docs.krita.org/en/general_concepts/colors/color_managed_workflow.html does not show computer and eye
- https://docs.krita.org/en/reference_manual/layers_and_masks/vector_layers.html does not show captions for two images at the bottom of the page (just squares instead of letters)
Test Plan: SVG tested with Chromium
Reviewers: Krita: Manual, woltherav
Reviewed By: Krita: Manual, woltherav
Subscribers: woltherav
Tags: Krita: Manual
Differential Revision: https://phabricator.kde.org/D20671
