New_cdot_navigation docs integration

What does this MR do and why?

Related to customers-gitlab-com#7008 (closed)

Cannot be merged until customers-gitlab-com#6372 (closed) is complete (new_cdot_navigation feature flag rollout).

An integration branch of updates for the new_cdot_navigation feature.

Updates:

Documentation link	Original MR	Status
payment methods documentation	Update CustomersPortal payment docs (!136124 - merged)	Reviewed
account owner/company details documentation, GL account linking documentation	Update personal and company information docs (!136126 - merged)	Reviewed
GitLab SaaS/SM & QSR payment method pages	Update GitLab SaaS/SM payment docs (!136520 - merged)	Reviewed
Billing/subscription contact (New section)	Add documentation for billing contacts (!136525 - merged)	Reviewed
Contact troubleshooting (New section)	Billing contact troubleshooting (!137401 - merged)	Reviewed

to support the new CDot Navigation UI flow

Screenshots or screen recordings

See original MRs for examples of new UI flows

How to set up and validate locally

• Run the review-docs-deploy pipeline job
• Click on the deployed app to view changes

MR acceptance checklist

This checklist encourages us to confirm any changes have been analyzed to reduce risks in quality, performance, reliability, security, and maintainability.

• I have evaluated the MR acceptance checklist for this MR.

changed milestone to %16.8

added devopsfulfillment docs-only documentation groupsubscription management sectionfulfillment labels

assigned to @lcallahan

mentioned in merge request !136126 (merged)

mentioned in merge request !136124 (merged)

mentioned in merge request !136520 (merged)

mentioned in merge request !136525 (merged)

added 2 commits

• 783320c6 - Update subscriptions payment docs
• ee494c39 - Merge branch '7008-subscriptions_payment_docs' into '7008-new_cdot_nav_docs_integration'

Compare with previous version

@lcallahan - please see the following guidance and update this merge request.

	1 Error
	Please add typebug typefeature, or typemaintenance label to this merge request.

	1 Warning
	8b74d0bb: The commit body should not contain more than 72 characters per line. For more information, take a look at our Commit message guidelines.

	1 Message
	This merge request adds or changes documentation files. A review from the Technical Writing team before you merge is recommended. Reviews can happen after you merge.

Documentation review

The following files require a review from a technical writer:

• doc/subscriptions/gitlab_com/index.md (Link to current live version)
• doc/subscriptions/self_managed/index.md (Link to current live version)
• doc/subscriptions/customers_portal.md (Link to current live version)
• doc/subscriptions/quarterly_reconciliation.md (Link to current live version)

The review does not need to block merging this merge request. See the:

• Metadata for the *.md files that you've changed. The first few lines of each *.md file identify the stage and group most closely associated with your docs change.
• The Technical Writer assigned for that stage and group.
• Documentation workflows for information on when to assign a merge request for review.

If needed, you can retry the danger-review job that generated this comment.

Generated by Danger

added 2 commits

• ef7e16af - Update CustomersPortal payment docs
• c30c5170 - Merge branch '7008-payment_methods' into '7008-new_cdot_nav_docs_integration'

Compare with previous version

added 2 commits

• 79cbeade - Update personal and company information docs
• d85f9d60 - Merge branch '7008-personal_info' into '7008-new_cdot_nav_docs_integration'

Compare with previous version

added 2 commits

• b3549d5d - Add documentation for billing contacts
• f09accf9 - Merge branch '7008-billing_subscription_contact_docs' into '7008-new_cdot_nav_docs_integration'

Compare with previous version

changed the description

mentioned in issue customers-gitlab-com#7008 (closed)

changed title from Draft: new_cdot_navigation docs integration to Draft: New_cdot_navigation docs integration