Update goreleaser release notes.

.goreleaser.yaml

@@ -108,3 +108,15 @@ changelog:
       - '^chore:'
       - '^docs:'
       - '^test:'
+
+release:
+  draft: true
+  header: |
+    ![GitHub Logo](https://raw.githubusercontent.com/algorand/go-algorand/master/release/release-banner.jpg)
+    ## Important
+
+    Indexer 3.1.0 uses Conduit for data loading. This is a change from the 2.x version, which managed data loading internally. See our [Using Conduit to Populate an Indexer Database](https://github.com/algorand/conduit/blob/master/docs/tutorials/IndexerWriter.md) tutorial for more information on how to use Conduit.
+  footer: |
+    **Full Changelog**: https://github.com/algorand/indexer/compare{{ .PreviousTag }}...{{ .Tag }}
+    ---
+    [Docker images for this release are available on Docker Hub.](https://hub.docker.com/r/algorand/indexer)