OZ-340: README as per Ozone's rebranding.

README.md

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+<p align="center">
+    <a href="https://docs.ozone-his.com/"><img src="https://raw.githubusercontent.com/ozone-his/.github/refs/heads/main/profile/ozone-logo.png" alt="Ozone" width="30%"/></a>
+</p>
+
+<h3 align="center">The Instant HIS</h3>
+
+<p align="center">
+    Welcome to Ozone's open-source repositories!
+    <br/>Engage with the Ozone community and access useful resources below:
+</p>
+
+<h3 align="center">
+    <a href="https://docs.ozone-his.com/">Docs</a>&nbsp;&nbsp;&nbsp;&nbsp;•&nbsp;&nbsp;&nbsp;&nbsp;<a href="https://talk.openmrs.org/c/software/ozone-his/70">Forum</a>&nbsp;&nbsp;&nbsp;&nbsp;•&nbsp;&nbsp;&nbsp;&nbsp;<a href="https://openmrs.slack.com/archives/C02PYQD5D0A">Chat Room</a>
+</h3>