Bid Strategy Types: Add ManualCpm

[opbld32]

Docs Build status updates of commit b9f869f:

:white_check_mark: Validation status: passed

File	Status	Preview URL	Details
Advertising/bingads-13/guides/budget-bid-strategies.md	:white_check_mark:Succeeded	View (=bingads-13)

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[rgaritta]

Disregard, will update in another commit.