[STORY: API-566] Update global WebAPI documentation to more clearly identify market-specific features

  Scaffold out how Versions, Markets, and Field details should be documented.
Fixed formatting issues
Completed JPEQ documentation for Balances end point
Updated Balances end point documentation
Fixed Errors info on Balances end point
Merge branch 'v2' into 'v2'

V2

Fixed some formatting issues with Place Order

See merge request !25
[API-566] Update global WebAPI documentation to more clearly identify the JP market-specific features

Updated response and order object to make documentation match JPEQ changes.
[STORY-API 566] Updated Balances, Positions, Position Groups related documentation for SCSK
[STORY-API 566] Place Order related documentation for SCSK
[STORY-API 566] Changes for SCSK documentation
Merge branch 'v2-cderrick' into v2

Conflicts:
	en/markets/jp.md