📝 Update CONTRIBUTING.md

Author: MathisFederico

CONTRIBUTING.md

@@ -8,19 +8,29 @@ Feel free to fork the repository, implement your changes and create a merge requ
 
 ## Build from source (for contributions)
 
+1. Clone the repository
+
 ```bash
 git clone https://github.com/IRLL/HierarchyCraft.git
 ```
 
-Install `uv` the [rust-based extremely fast package management tool](https://docs.astral.sh/uv/getting-started/installation/).
+2. Install `uv`
+
+`uv` is a rust-based extremely fast package management tool 
+that we use for developement.
 
+See [`uv` installation instructions](https://docs.astral.sh/uv/getting-started/installation/).
 
-Install hcraft as an editable package with 
+3. Install all dependencies in a virtual environment using uv
+
+Install hcraft as an editable package with
 dev requirements and all other extra requirements using uv:
 ```bash
 uv sync --extra gym --extra gui --extra planning --extra htmlvis
 ```
 
+4. Check installation
+
 Check installation by running (fast) tests,
 remove the marker flag to run even slow tests:
 ```bash