[Update rexrtbBidAdapter] Update default host (prebid#3217)

* Add: rxrtb prebidAdapter

* Update: params for test

* Update: code format

* Update: code format

* Update: code format

* Fix param check

* Update rxrtbBidAdapter.js

* Remove required source param

* Update and rename rxrtbBidAdapter.js to rexrtbBidAdapter.js

* Update and rename rxrtbBidAdapter.md to rexrtbBidAdapter.md

* Update and rename rxrtbBidAdapter_spec.js to rexrtbBidAdapter_spec.js

* Revert "Update rxrtbBidAdapter.js"

This reverts commit 09bca02.

* Revert "Update and rename rxrtbBidAdapter_spec.js to rexrtbBidAdapter_spec.js"

This reverts commit 2481c58.

* Revert "Update and rename rxrtbBidAdapter.md to rexrtbBidAdapter.md"

This reverts commit af9a491.

* Revert "Update and rename rxrtbBidAdapter.js to rexrtbBidAdapter.js"

This reverts commit 81a17ad.

* Revert "Remove required source param"

This reverts commit 38b273d.

*  Revert "Update rxrtbBidAdapter.js"

* Update and rename rexrtbPrebid

* Update default host

* Revert update

* Update default host

modules/rexrtbBidAdapter.js

@@ -4,7 +4,7 @@ import {registerBidder} from 'src/adapters/bidderFactory';
 import {config} from 'src/config';
 
 const BIDDER_CODE = 'rexrtb';
-const DEFAULT_HOST = 'bid.rxrtb.bid';
+const DEFAULT_HOST = 'bid.rxrtb.com';
 const AUCTION_TYPE = 2;
 const RESPONSE_TTL = 900;