RTB House Bid Adapter: docs update - FLEDGE support (prebid#9986)

* RTB House Bid Adapter: docs update - FLEDGE support

* RTB House Bid Adapter: shortening and rewording

modules/rtbhouseBidAdapter.md

@@ -65,3 +65,27 @@ Please reach out to pmp@rtbhouse.com to receive your own
            }
        ];
 ```
+
+# Protected Audience API (FLEDGE) support
+There’s an option to receive demand for Protected Audience API (FLEDGE/PAAPI) 
+ads using RTB House bid adapter. 
+Prebid’s [fledgeForGpt](https://docs.prebid.org/dev-docs/modules/fledgeForGpt.html) 
+module and Google Ad Manager is currently required.
+
+The following steps should be taken to setup Protected Audience for RTB House:
+
+1. Reach out to your RTB House representative for setup coordination.
+
+2. Build and enable FLEDGE module as described in 
+[fledgeForGpt](https://docs.prebid.org/dev-docs/modules/fledgeForGpt.html) 
+module documentation.
+
+    a. Make sure to enable RTB House bidder to participate in FLEDGE. If there are any other bidders to be allowed for that, add them to the **bidders** array:
+```javascript
+pbjs.setBidderConfig({
+    bidders: ["rtbhouse"],
+    config: {
+        fledgeEnabled: true
+    }
+});
+```