RTB House: fixed ortb-version value type

Author: pjaworski-rtbh

src/main/resources/bidder-config/rtbhouse.yaml

@@ -12,7 +12,7 @@ adapters:
     # endpoint: http://prebidserver-s2s-sin.creativecdn.com/bidder/prebidserver/bids
     geoscope:
       - global
-    ortb-version: 2.6
+    ortb-version: "2.6"
     endpoint-compression: gzip
     meta-info:
       maintainer-email: [email protected]