Fixed filename for freedomadnetwork.md (#6323)

Author: klaussilveira

dev-docs/bidders/freedomadnetwork.md

@@ -3,7 +3,7 @@ layout: bidder
 title: Freedom Ad Network
 description: Freedom Ad Network Bidder Adapter
 biddercode: freedomadnetwork
-filename: fanAdapter
+filename: fanBidAdapter
 gvl_id: none
 coppa_supported: true
 media_types: banner, native