Fix minor error in JavaScript style guide docs

See merge request gitlab-org/gitlab!51167

Update development documentation for Gitaly

See merge request gitlab-org/gitlab!49236

I'm currently working on a change that cuts across both Gitaly and
GitLab. It's been a while since I've done this, and I ran into a couple
of issues that weren't spelled out in the docs. Here's an update.

Improve self-managed subscription docs

See merge request gitlab-org/gitlab!50674

Add timeout of 300 to allow Pages job to complete

See merge request gitlab-org/gitlab!51234

Add space after an icon in metrics button

See merge request gitlab-org/gitlab!51043

Replace prepend-top-20 in ci variables

See merge request gitlab-org/gitlab!48506

Edit pipeline subscriptions UI text

See merge request gitlab-org/gitlab!51177

Enable collect_package_events_redis by default

See merge request gitlab-org/gitlab!50092

Add better way to load EE specific pipelines for Bulk Imports

See merge request gitlab-org/gitlab!50991

Quote Vale placeholder text

See merge request gitlab-org/gitlab!51050

[RUN AS-IF-FOSS] Add basic reviewers quick actions

See merge request gitlab-org/gitlab!46358

This is mostly a copy of the /assign, /unassigns,
commands. One additional item is checking if a
potentially assigned user has permissions to
review the MR.

Documentation - fix typo

See merge request gitlab-org/gitlab!51013

Add usage ping for generic metrics

See merge request gitlab-org/gitlab!50790

Clarify pre-filled variables require description, line 136

See merge request gitlab-org/gitlab!50554

docs: Add instructions to build a docker image with kaniko on a runner behind an http(s) proxy.

See merge request gitlab-org/gitlab!48022

Support .gitlab-ci.yml static validation in projects in sub-groups

See merge request gitlab-org/gitlab!51106

Add note to conan docs about known issue

See merge request gitlab-org/gitlab!51176

Extend MergeRequestFinder to search by squash and merge commits

See merge request gitlab-org/gitlab!49968

Document fields of the gitlab_standard Snowplow schema

See merge request gitlab-org/gitlab!51149

Debian Group and Project Distributions

See merge request gitlab-org/gitlab!49405

Remove the testing category from the usage
data spec ineligible categories list.

Fix event and feature flag name to include `i` and
`testing`. Also, I originally messed up the event
name altogether so it needed to be fixed anyway.

Add MR URLs to the feature flag and changelog
files.

Add usage ping to track how many people are
using the generic metrics report in the merge
requests.

Add integration to support statement for IdPs

See merge request gitlab-org/gitlab!51248

Improvements to dast site GQL resolvers

See merge request gitlab-org/gitlab!50426

Remove total_pipeline_duration from project_type

See merge request gitlab-org/gitlab!50093

Adds clarifying comment

See merge request gitlab-org/gitlab!50427

This removes the total_pipeline_duration from the
project_type of the GraphQL api

Invalidate reviews counter cache when MR gets closed/merged/reopened

See merge request gitlab-org/gitlab!51055