"Update README.md with new FoundationCalcs website links"

Author: kunle009

README.md

@@ -10,7 +10,7 @@
 [![Code style: Ruff](https://img.shields.io/endpoint?url=https://raw.githubusercontent.com/charliermarsh/ruff/main/assets/badge/format.json)](https://github.com/charliermarsh/ruff)
 [![Webapp](https://img.shields.io/website?url=https%3A%2F%2Ffoundationcalcs.com)](https://foundationcalcs.com)
 
-🚀 **Exciting Update**: The [FoundationCalcs](https://foundationcalcs.com) website is now live for beta testing! The platform allows you design foundations and download comprehensive pdf report. You can access the pad foundation calculator [here](https://foundationcalcs.com/pad_foundation_calculator) and start interacting with this library via a web UI. Your feedback is important to improve the core library and the web platform.
+🚀 **Exciting Update**: The [FoundationCalcs](https://foundationcalcs.com) website is now live for beta testing! The platform allows you design foundations and download comprehensive pdf report. You can access the pad foundation calculator [here](https://foundationcalcs.com/pad_foundation_calculator) and the combined pad foundation calculator [here](https://foundationcalcs.com/combined_pad_foundation_calculator) and start interacting with this library via a web UI. Your feedback is important to improve the core library and the web platform.
 
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