DOCS-722 - MSSP library content management

[jpipkin1]

Purpose of this pull request

This pull request adds information about how to manage Library content in this beta article:
https://help.sumologic.com/docs/manage/manage-subscription/create-and-manage-orgs/manage-orgs-for-mssps/

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)

DOCS-722

[kimsauce]

Hi @jpipkin1 , had some suggestions here #5412

[jpipkin1]

Thanks, @kimsauce! I love what you did. I merged your suggestions.

[jpipkin1]

@JV0812, I'm reassigning this PR to you.

[JV0812]

@jpipkin1 Thanks for creating this PR. I have created the PR: #5509 to add more info for the same changes. Closing this PR as content is transferred and additional content is added in the new PR.