[pre-commit.ci] auto fixes from pre-commit.com hooks

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Author: pre-commit-ci[bot]

docs/source/contributing.rst

@@ -15,7 +15,7 @@ You need to create a development environment with `nodejs` and `jupyterlab` inst
     micromamba create -n jupytercad_dev -c conda-forge nodejs jupyterlab -y
 
 
-**Note:** There are 2 possibilities for the installation. 
+**Note:** There are 2 possibilities for the installation.
 
 1) either you are using [Docker](https://www.docker.com/) to build `@jupytercad/opencascade` package and you need to run `jlpm dev`