docs: minor update to add extras to reflect main readme. (#448)

* Minor update to add extras to reflect main readme.

* DCO Remediation Commit for Ahmed Nassar <[email protected]>

I, Ahmed Nassar <[email protected]>, hereby add my Signed-off-by to this commit: 05bb262

Signed-off-by: Ahmed Nassar <[email protected]>

---------

Signed-off-by: Ahmed Nassar <[email protected]>
Co-authored-by: Ahmed Nassar <[email protected]>

Author: nassarofficial

CONTRIBUTING.md

@@ -20,7 +20,7 @@ You can use the `uv sync` to create a project virtual environment (if it does no
 the project's dependencies with the environment.
 
 ```bash
-uv sync
+uv sync --all-extras
 ```
 
 #### Use a specific Python version (optional)
@@ -30,7 +30,7 @@ and run the sync command:
 
 ```bash
 uv venv --python 3.12
-uv sync
+uv sync --all-extras
 ```
 
 More detailed options are described on the [Using Python environments](https://docs.astral.sh/uv/pip/environments/) documentation.