Change category of Sharepoint configuration to D&M

• Type: Task
• Status: Closed
• Priority: Minor
• Resolution: Completed
• Affects Version/s: None
• Fix Version/s: 7.1.X, 7.2.X, Master
• Component/s: External Document Repositories > Sharepoint
• Labels: None
• Branch Version/s:
  7.2.x, 7.1.x
• Backported to Branch:
  Committed
• Git Pull Request: https://github.com/brianchandotcom/liferay-portal-ee/pull/24958

The configuration for Sharepoint repositories is located (wrongly) under a non existing category "collaboration". Move them to the "D&M" configuration category.