Management Activity API misses URLs for Germany and China national clouds

[paul-sh]

Management Activity API Reference (https://docs.microsoft.com/en-us/office/office-365-management-api/office-365-management-activity-api-reference) in the 'Activity API operations' section provides URLs for Enterprise, GCC, GCC High, and DoD subscription plans.
But not for the national clouds, Germany and China.

Observed result: URLs for Enterprise, GCC, GCC High, DoD
Expected result: URLs for Enterprise, GCC, GCC High, DoD, Germany, and China