Fix external links to the Magento technical documentation

[dshevtsov]

Description (*)

Fix broken links and update obsolete links to devdocs.magento.com and docs.magento.com domains.

Manual testing scenarios (*)

1. Click a link to devdocs.magento.com or docs.magento.com domains
2. The requested HTML page is successfully rendered with no errors
3. The page is of latest version of the topic (2.3)

Questions or comments

Contribution checklist (*)

• Pull request has a meaningful description of its purpose
• All commits are accompanied by meaningful commit messages
• All new or changed code is covered with unit/integration tests (if applicable)
• All automated tests passed successfully (all builds are green)

[m2-assistant]

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[magento-cicd2]

All committers have signed the CLA.

[hostep]

@dshevtsov: wouldn't it make more sense to have some sort of latest part in the url on devdocs instead of a fixed version number which will change every year or so?
I already suggested something like that a while ago: magento/devdocs#924 (comment)

[dshevtsov]

@hostep yes, it would, for sure. This is in the DevDocs team roadmap and we've been discussing different ways of how to get closer to this.

[magento-engcom-team]

Hi @rogyar, thank you for the review.
ENGCOM-5553 has been created to process this Pull Request
✳️ @rogyar, could you please add one of the following labels to the Pull Request?

Label	Description
Auto-Tests: Covered	All changes in Pull Request is covered by auto-tests
Auto-Tests: Not Covered	Changes in Pull Request requires coverage by auto-tests
Auto-Tests: Not Required	Changes in Pull Request does not require coverage by auto-tests

[engcom-Delta]

✔️ QA passed

[m2-assistant]

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