docs: Update Development section

Author: kvankova

README.md

@@ -222,13 +222,13 @@ We welcome contributions to improve this tool!
 - If you want to **contribute to the code**, please pick an issue that is not assigned to anyone and comment on it, so that we know you are working on it.
 
 ## 🛠️ Development
-You can clone this project locally by using the following command:
-```bash
-git clone https://github.com/kvankova/code-embedder.git
-cd code-embedder
-```
-Install the dependencies by using the following command:
+You can fork this project and then install the dependencies by using the following command:
 ```bash
 pip install poetry==1.8.4
 poetry install --with dev
 ```
+Make changes to the code and run the tests to make sure everything works as expected:
+```bash
+poetry run pytest
+```
+Commit your changes, push them to the repository 🚀, and open a new pull request.