docs: update maintainer announcement to reflect open to work status (koxudaxi#3007)

Author: koxudaxi

README.md

@@ -11,6 +11,8 @@
 [![Pydantic v1](https://img.shields.io/endpoint?url=https://raw.githubusercontent.com/pydantic/pydantic/main/docs/badge/v1.json)](https://pydantic.dev)
 [![Pydantic v2](https://img.shields.io/endpoint?url=https://raw.githubusercontent.com/pydantic/pydantic/main/docs/badge/v2.json)](https://pydantic.dev)
 
+> 📣 💼 Maintainer update: Open to opportunities. 🔗 [koxudaxi.dev](https://koxudaxi.dev/?utm_source=github_readme&utm_medium=top&utm_campaign=open_to_work)
+
 ## ✨ What it does
 
 - 📄 Converts **OpenAPI 3**, **JSON Schema**, **GraphQL**, and raw data (JSON/YAML/CSV) into Python models

overrides/main.html

@@ -2,7 +2,7 @@
 
 {% block announce %}
   📣 💼 Maintainer update: I'm open to opportunities.
-  <a href="https://koxudaxi.dev/?utm_source=dm-docs&utm_medium=announce&utm_campaign=open_to_work"
+  <a href="https://koxudaxi.dev/?utm_source=dm_docs&utm_medium=announce_bar&utm_campaign=open_to_work"
      target="_blank" rel="noopener">
     🔗 koxudaxi.dev
   </a>