Update artifacthub-repo.yml username. (#679)

### Description
Coming from
https://github.com/artifacthub/hub/blob/master/docs/metadata/artifacthub-repo.yml,
update the username to claim the ownership.

### Issues Resolved
Part of
#674

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under the terms of the Apache 2.0 license.
For more information on following Developer Certificate of Origin and
signing off your commits, please check
[here](https://github.com/opensearch-project/OpenSearch/blob/main/CONTRIBUTING.md#developer-certificate-of-origin).

artifacthub-repo.yml

@@ -1,6 +1,17 @@
-repositoryID: 4b29d8fe-d914-494f-805e-d5fd0938f9af
+# Artifact Hub repository metadata file
+#
+# Some settings like the verified publisher flag or the ignored packages won't
+# be applied until the next time the repository is processed. Please keep in
+# mind that the repository won't be processed if it has not changed since the
+# last time it was processed. Depending on the repository kind, this is checked
+# in a different way. For Helm http based repositories, we consider it has
+# changed if the `index.yaml` file changes. For git based repositories, it does
+# when the hash of the last commit in the branch you set up changes. This does
+# NOT apply to ownership claim operations, which are processed immediately.
+#
+#repositoryID: 4b29d8fe-d914-494f-805e-d5fd0938f9af
 owners:
   - name: Idan Levi
     email: [email protected]
-  - name: Prudhvi Godithi
+  - name: prudhvigodithi
     email: [email protected]