Add Robusta.dev to list of Pydantic users (#3715)

* add robusta.dev to pydantic users

* update robusta.dev description and fix typo

docs/index.md

@@ -114,6 +114,11 @@ Hundreds of organisations and packages are using *pydantic*, including:
 : trusts *pydantic* (via FastAPI) and [*arq*](https://github.com/samuelcolvin/arq) (Samuel's excellent
   asynchronous task queue) to reliably power multiple mission-critical microservices.
 
+[Robusta.dev](https://robusta.dev/)
+: are using *pydantic* to automate Kubernetes troubleshooting and maintenance. For example, their open source
+  [tools to debug and profile Python applications on Kubernetes](https://home.robusta.dev/python/) use
+  *pydantic* models.
+
 For a more comprehensive list of open-source projects using *pydantic* see the 
 [list of dependents on github](https://github.com/samuelcolvin/pydantic/network/dependents).