Typo : Typo in file name in getting started

**URL of the docs page**
https://docs.dapr.io/developing-ai/dapr-agents/dapr-agents-getting-started/

**How is it currently worded?**
02_durable_agent_http.py – the main durable weather agent application exposed over HTTP

**How should it be worded?**
03_durable_agent_http.py – the main durable weather agent application exposed over HTTP

**Screenshots**

**Additional context**
The proof that it should be worded like that is evident from the dapr-agents repo.
[Proof](https://github.com/dapr/dapr-agents/blob/main/quickstarts/03_durable_agent_http.py)

Open the Dapr Agents getting-started page at https://docs.dapr.io/developing-ai/dapr-agents/dapr-agents-getting-started/ and compare its filename reference with dapr-agents/quickstarts/03_durable_agent_http.py. Update the displayed filename from 02_durable_agent_http.py to 03_durable_agent_http.py, then verify the page shows the corrected wording.

Written by the indexing model from the issue text.