reformat readme

Author: rchl

README.md

@@ -2,18 +2,22 @@
 
 Requires py3.8 and up.
 
+## Setup
+
 Install dependecies:
-```
+```sh
 pip install -r requirements.txt
 ```
 
+## Update types
+
 Download the latest json schema:
-```
+```sh
 python ./download_schemas.py
 ```
 
 Generate the types:
-```
+```sh
 python ./generate.py
 ```
 Copy the `lsp_types.py` file to your project.