update API docs for oauth client id generation
update API docs for oauth client id generation

There's now a UI for this, no need to use the console.

Change-Id: Iffdb70d41c5b4cca94a6bb442107d3923911e16d
Reviewed-on: https://gerrit.instructure.com/15232
Tested-by: Jenkins <d95b56ce41a2e1ac4cecdd398defd7414407cc08@instructure.com>
Reviewed-by: Cody Cutrer <c4fe2b1d90ef8f2548c8aeabfa633434316f0305@instructure.com>

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