Add placement_type and position documentation to spotx adapter. (#2053)
Add placement_type and position documentation to spotx adapter. (#2053)

* Add min_duration and max_duration paramters to spotx.md

* Fix table styling for Spotx bid params

* Add placement_type and position documentation to spotx adapter.

Co-authored-by: Nick Peceniak <763f7b8558ea91394586e3e5fde073a8d8436f24@spotx.tv>
prebid/prebid.github.io,prebid/prebid.github.io,prebid/prebid.github.io