docs: add Available for Hire banner

README.md

@@ -1,3 +1,10 @@
+## 🚀 Available for Hire
+
+**Specialties:** RAG Systems | PDF Processing | FastAPI | LangChain
+**Rate:** $15–45/hour
+**Contact:** [Upwork](https://www.upwork.com/) | [Email](mailto:you@example.com)
+
+---
 ---
 title: FastAPI RAG API
 sdk: docker
@@ -11,4 +18,4 @@ Open /docs for the interactive API.
 
 ## Quick test
 curl -F "file=@sample.pdf" https://<API>/upload_pdf
-curl -H "Content-Type: application/json" -d "{\"question\":\"What is the document about?\",\"top_k\":5}" https://<API>/ask_question
+curl -H "Content-Type: application/json" -d "{\"question\":\"What is the document about?\",\"top_k\":5}" https://<API>/ask_question