Related epic: https://gitlab.com/groups/gitlab-com/-/epics/1940

When we updated the PlantUML integration page, we didn't check the
pages that also -mentioned- PlantUML. Three needed revisions to help
with clarity.

Related to Group: Source Code

Use better wording in this sentence.

Refer users to use a normal link.

Various style edits to AsciiDoc page

We don't need to allow irregular quotes, as it could
allow some tests to be avoided if the test looks for
the standard style only

Begin the process of cleaning up future tense in the Create docset.

Add a preliminary  **(FREE)** badge to the H1 line for each of these
pages. While these badges may not be correct, it will give the PMs an
opportunity to review the badging and correct it if needed.

Take care of more spelling issues: edit the words, put them in code
tags, or add them to the spelling exceptions list.

Use various approaches to resolve spelling issues.

Changes alert boxes to match style guide

The previous URL had two drawbacks:

1. It didn't match what the title was about (`Assignments to DevOps
   Stages and Groups`, and the anchor was `#designated-technical-writers`).
2. It didn't account for the other sections, like development and API
   guidelines.

Add stage Create metadata to: user/*, topics/*, git/*, ssh/*, gitlab-basics/*, integration/*, push_rules/*

Another MR to add languages to code blocks.

This sets a maximum limit on the number of include directives that any
one file may use (transitively). This is set relatively low at the
moment to 32 since each one requires a gitlay call to retrieve a blob
from the repo, and experimentation suggests that this keeps processing
to under 10sec.

This approach prevents both cyclic imports as well as having a single
file with an extremely lang list of includes.

Update redirected and 404 links in import, integration
and various Plan docs.

Clarify rules for code blocks, including spaces
above and below, and to use tilde when code blocks
contain triple backticks

All code blocks should be surrounded by blank lines

This updates redirected links in integration, update, user
and workflow dirs. Should now link to final URLs to avoid
redirect hops

Linting rule not enabled for now
because tooling produces false
positives.

See http://asciidoctor.org/docs/user-manual/#include-directive