Project Documentation Editing

I'm a product manager for a Saas company. I've got a great deal of internal documentation and communication to complete in the next 3 weeks and won't have access to technical writing or marketing resources. I'm looking for someone that can edit, organize and fill in some gaps within technical documentation, process documentation and marketing content for mostly internal audiences.

I need faster iteration cycles and someone that can have live pass-off calls and working sessions together.

Attached is an example of the unfinished type of documentation that needs to be cleaned up.