Fix: Broken links in README.rst banner text [skip ci]

Signed-off-by: Matthew Watkins <[email protected]>

README.rst

@@ -1,6 +1,8 @@
-[IMPORTANT]
 
-On June 26 2024, Linux Foundation announced the merger of its financial services umbrella, the Fintech Open Source Foundation ([FINOS](https://finos.org)), with OS-Climate, an open source community dedicated to building data technologies, modeling, and analytic tools that will drive global capital flows into climate change mitigation and resilience; OS-Climate projects are in the process of transitioning to the [FINOS governance framework](https://community.finos.org/docs/governance); read more on [finos.org/press/finos-join-forces-os-open-source-climate-sustainability-esg](https://finos.org/press/finos-join-forces-os-open-source-climate-sustainability-esg)
+💬 Important
+
+On June 26 2024, Linux Foundation announced the merger of its financial services umbrella, the Fintech Open Source Foundation (`FINOS <https://finos.org>`_), with OS-Climate, an open source community dedicated to building data technologies, modelling, and analytic tools that will drive global capital flows into climate change mitigation and resilience; OS-Climate projects are in the process of transitioning to the `FINOS governance framework <https://community.finos.org/docs/governance>`_; read more on `finos.org/press/finos-join-forces-os-open-source-climate-sustainability-esg <https://finos.org/press/finos-join-forces-os-open-source-climate-sustainability-esg>`_
+
 
 .. image:: https://img.shields.io/badge/OS-Climate-blue
   :alt: An OS-Climate Project