Documentation updates for the framecpp-c interface.

Description

Minor documentation updates.

• Updates to some blocks of comments that have been copy/pasted without changes
• Minor spelling updates
• No api changes.

API Changes and Justification

Backwards Compatible Changes

• This change does not modify any class/function/struct/type definitions in a public C header file or any Python class/function definitions
• This change adds new classes/functions/structs/types to a public C header file or Python module

Backwards Incompatible Changes

• This change modifies an existing class/function/struct/type definition in a public C header file or Python module
• This change removes an existing class/function/struct/type from a public C header file or Python module

Review Status

assigned to @ed-maros

For #204

mentioned in commit 8117a3a4

merged

picked the changes into the branch cherry-pick-8117a3a4 with commit 8dc95432

mentioned in commit 8dc95432