Enhance contributing guide formatting for improved clarity on setup instructions

Author: grongierisc

docs/contributing.md

@@ -4,49 +4,51 @@
 
 To run the unit tests, you must follow the steps below:
 
-1. Create a virtual environment.
+### Create a virtual environment.
 
 ```bash
 python -m venv .venv
 source .venv/bin/activate
 ```
 
-2. Install the dependencies.
+### Install the dependencies.
 
 ```bash
 pip install -r requirements-dev.txt
 ```
 
-3. Have a running IRIS instance.
+### Have a running IRIS instance.
 
 Here you can choose between:
 
 - Local installation of IRIS
 - Docker installation of IRIS
 
-### Local installation of IRIS
+#### Local installation of IRIS
 
-1. Install IRIS locally.
+##### Install IRIS locally.
 
 - [Local installation of IRIS](https://docs.intersystems.com/irislatest/csp/docbook/Doc.View.cls?KEY=PAGE_deployment_install)
 - [Python interpreter compatible with the version of IRIS](https://docs.intersystems.com/iris20243/csp/docbook/Doc.View.cls?KEY=GEPYTHON_prereqs#GEPYTHON_prereqs_version)
 - [Iris embedded python wrapper](https://github.com/grongierisc/iris-embedded-python-wrapper)
     - Make sure to follow the [instructions to install the wrapper in your IRIS instance.](https://github.com/grongierisc/iris-embedded-python-wrapper?tab=readme-ov-file#pre-requisites)
 
 
-2. Then, symbolically this git to the IRIS pyhton directory:
+##### Set up the IRIS instance.
+
+Then, symbolically this git to the IRIS pyhton directory:
 
 ```bash
 ln -s <your_git_dir>/src/iop $IRISINSTALLDIR/python/iop
 ```
 
-3. Run the unit tests.
+##### Run the unit tests.
 
 ```bash
 pytest
 ```
 
-### Docker installation of IRIS
+#### Docker installation of IRIS
 
 No prerequisites are needed. Just run the following command: