DOCS-780 - Real-time sched search deprecation

[kimsauce]

Purpose of this pull request

Update real-time sched search deprecation. On hold per engineering and PM.

Select the type of change

• Minor Changes - Typos, formatting, slight revisions
• Update Content - Revisions, updating sections
• New Content - New features, sections, pages, tutorials
• Site and Tools - .clabot, version updates, maintenance, dependencies, new packages for the site (Docusaurus, Gatsby, React, etc.)

Ticket (if applicable)

https://sumologic.atlassian.net/browse/DOCS-780

[jpipkin1]

Nicely done, @kimsauce! But I still see instances of "real-time alert" in articles. Do they need to be updated?

[soc-service-agent]

🎉 Snyk checks have passed. No issues have been found so far.

✅ security/snyk check is complete. No issues have been found. (View Details)

✅ license/snyk check is complete. No issues have been found. (View Details)

[kimsauce]

Nicely done, @kimsauce! But I still see instances of "real-time alert" in articles. Do they need to be updated?

Thank you! "real-time alert" is ok I think; it's just real-time scheduled searches that's being deprecated.