Flesh out Python Worker readme (#8331)

* Flesh out Python Worker readme

Adds link to `uv` installation instructions

* Update packages/create-cloudflare/templates/hello-world/py/README.md

Co-authored-by: Pete Bacon Darwin <[email protected]>

---------

Co-authored-by: Pete Bacon Darwin <[email protected]>

Author: dom96

packages/create-cloudflare/templates/hello-world/py/README.md

@@ -7,12 +7,17 @@ worker without having to restart `wrangler`.
 ### Types and autocomplete
 
 This project also includes a pyproject.toml and uv.lock file with some requirements which
-set up autocomplete and type hints for this Python Workers project. To get these installed
-you can run the following:
+set up autocomplete and type hints for this Python Workers project.
+
+To get these installed you'll need `uv`, which you can install by following
+https://docs.astral.sh/uv/getting-started/installation/.
+
+Once `uv` is installed, you can run the following:
 
 ```
 uv venv
 uv sync
 ```
 
-Then point your editor's Python plugin at the `.venv` directory.
+Then point your editor's Python plugin at the `.venv` directory. You should then have working
+autocomplete and type information in your editor.