Docs for SERVER-41301: Adjust the user facing syntax of shell FLE to match drivers syntax

Description

Description:

Please see updated FLE Shell spec document

Engineering Ticket Description:

Currently, the user facing syntax of the shell does not match the user facing syntax of the drivers. Update / append to / delete from the syntax to match the drivers syntax.

Scope of changes

Impact to Other Docs

MVP (Work and Date)

Resources (Scope or Design Docs, Invision, etc.)