Updates to URL paths and folders required as a result of name changes

[hollyschinsky]

Updates the folders from /authoring/ to /document-sandbox/ and /editor/ to /document-apis/, as well as all affected links.
** NOTE: ** THIS PR CANNOT BE MERGED UNTIL DEVSITE TEAM IS READY TO PUSH REDIRECTS NOTED IN THIS TICKET -> https://jira.corp.adobe.com/browse/DEVSITE-976, to ensure we don't break bookmarked links.

Description

Related Issue

https://jira.corp.adobe.com/browse/HZ-33207
https://jira.corp.adobe.com/browse/DEVSITE-976

Motivation and Context

Match names of paths to new naming requirements.

How Has This Been Tested?

Screenshots (if appropriate):

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist:

• I have signed the Adobe Open Source CLA.
• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have read the CONTRIBUTING document.
• I have added tests to cover my changes.
• All new and existing tests passed.