Minor tweaks to Python "first server" intro

Author: jspahrsummers

docs/first-server/python.mdx

@@ -11,6 +11,10 @@ Let's build your first MCP server in Python! We'll create a weather server that
 
 ## Prerequisites
 
+<Info>
+  The following steps are for macOS. Guides for other platforms are coming soon.
+</Info>
+
 <Steps>
   <Step title="Install Python">
     You'll need Python 3.10 or higher:
@@ -21,7 +25,9 @@ Let's build your first MCP server in Python! We'll create a weather server that
     ```
   </Step>
 
-  <Step title="Install uv (https://docs.astral.sh/uv/) via homebrew">
+  <Step title="Install uv via homebrew">
+    See https://docs.astral.sh/uv/ for more information.
+
     ```bash
     brew install uv
     uv --version # Should be 0.4.18 or higher
@@ -54,14 +60,8 @@ Let's build your first MCP server in Python! We'll create a weather server that
 ## Create your server
 
 <Steps>
-  <Step title="Create project structure">
-    ```bash
-    touch weather_server.py
-    ```
-  </Step>
-
   <Step title="Add the base code">
-    In `weather_server.py`:
+    Create a file `weather_server.py` and add the following:
 
     ```python
     import os