docs: update README.md [skip ci]

README.md

@@ -1,6 +1,6 @@
 # Quartz Solar Forecast
 <!-- ALL-CONTRIBUTORS-BADGE:START - Do not remove or modify this section -->
-[![All Contributors](https://img.shields.io/badge/all_contributors-4-orange.svg?style=flat-square)](#contributors-)
+[![All Contributors](https://img.shields.io/badge/all_contributors-5-orange.svg?style=flat-square)](#contributors-)
 <!-- ALL-CONTRIBUTORS-BADGE:END -->
 
 The aim of the project is to build an open source PV forecast that is free and easy to use.
@@ -135,6 +135,7 @@ Thanks goes to these wonderful people ([emoji key](https://allcontributors.org/d
       <td align="center" valign="top" width="14.28%"><a href="https://github.com/zakwatts"><img src="https://avatars.githubusercontent.com/u/47150349?v=4?s=100" width="100px;" alt="Megawattz"/><br /><sub><b>Megawattz</b></sub></a><br /><a href="#ideas-zakwatts" title="Ideas, Planning, & Feedback">🤔</a></td>
       <td align="center" valign="top" width="14.28%"><a href="https://github.com/EdFage"><img src="https://avatars.githubusercontent.com/u/87755165?v=4?s=100" width="100px;" alt="EdFage"/><br /><sub><b>EdFage</b></sub></a><br /><a href="https://github.com/openclimatefix/Open-Source-Quartz-Solar-Forecast/commits?author=EdFage" title="Documentation">📖</a> <a href="https://github.com/openclimatefix/Open-Source-Quartz-Solar-Forecast/commits?author=EdFage" title="Code">💻</a></td>
       <td align="center" valign="top" width="14.28%"><a href="https://github.com/chloepilonv"><img src="https://avatars.githubusercontent.com/u/136987461?v=4?s=100" width="100px;" alt="Chloe Pilon Vaillancourt"/><br /><sub><b>Chloe Pilon Vaillancourt</b></sub></a><br /><a href="https://github.com/openclimatefix/Open-Source-Quartz-Solar-Forecast/commits?author=chloepilonv" title="Documentation">📖</a></td>
+      <td align="center" valign="top" width="14.28%"><a href="http://racheltipton.dev"><img src="https://avatars.githubusercontent.com/u/86949265?v=4?s=100" width="100px;" alt="rachel tipton"/><br /><sub><b>rachel tipton</b></sub></a><br /><a href="#talk-rachel-labri-tipton" title="Talks">📢</a></td>
     </tr>
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 </table>