Colossus Bid Adapter: update bid params (prebid#3481)

* Updated docs Colossusssp Adapter

* Update colossusssp.md

Add media types

* Update colossusssp.md

add usp consent support

* adding schain flag

* gdpr and user ids

* id5id support

* Prebid server info

* Remove PBS params

* Add colossus PBS docs

* Add short note for pbs adapter parametres

* Add note for pbjs parametres

* Fix

* remove duplicate string

* Update colossusssp.md

Ad biddflorr parameter

* add uid2

* fix

* fix

* add group_id

Co-authored-by: Vladislav Isaiko <vladis@smartyads.com>
Co-authored-by: bretg <bgorsline@gmail.com>
Co-authored-by: Aiholkin <artem.iholkin@smartyads.com>

Author: 4 people

dev-docs/bidders/colossusssp.md

@@ -18,7 +18,8 @@ pbs: false
 {: .table .table-bordered .table-striped }
 | Name           | Scope    | Description                                              | Example    | Type      |
 |----------------|----------|----------------------------------------------------------|------------|-----------|
-| `placement_id` | required | Placement Id will be generated on Colossus SSP Platform. | `0`        | `integer` |
+| `placement_id` | optional | Placement Id will be generated on Colossus SSP Platform. Use instead of group_id | `0`        | `integer` |
+| `group_id`     | optional | Group Id will be generated on Colossus SSP Platform. Use instead of placement_id  | `0`        | `integer` |
 | `traffic`      | optional | Type traffic                                             | `'banner'` | `string`  |
 
 *For colossus prebid server parametres, look into colossus.md*