remove trailing /

rds-deployment-existing-ad/azuredeploy.json

@@ -97,7 +97,7 @@
     "publicIpRef": "publicIp",
     "brokerIpRef": "brokerpublicIp",
     "gatewayIpRef": "gatewaypublicIp",
-    "assetLocation": "https://raw.githubusercontent.com/Azure/AzureStack-QuickStart-Templates/master/rds-deployment/"
+    "assetLocation": "https://raw.githubusercontent.com/Azure/AzureStack-QuickStart-Templates/master/rds-deployment"
   },
   "resources": [
     {