added napari-plot-profile to python/conda install instructions

it is needed for `_includes/pixels/pixels_act1_skimage_napari.py`, which
previously required additional installation steps that we want to avoid
due to the this module being usually taught early in the course.

closes #650

.github/workflows/test-python-scripts.yml

@@ -29,7 +29,7 @@ jobs:
           channel-priority: strict
           miniforge-version: latest
       - name: install common conda dependencies
-        run: conda install -c conda-forge -c euro-bioimaging python=3.10 napari=0.4.17 pytest notebook matplotlib jupytext "scikit-image>=0.20" openijtiff -y
+        run: conda install -c conda-forge -c euro-bioimaging python=3.10 napari=0.4.17 pytest notebook matplotlib jupytext "scikit-image>=0.20" openijtiff napari-plot-profile -y
       - name: linux test
         if: matrix.os == 'ubuntu-latest'
         shell: bash -l {0}

_includes/tool_installation/install_skimage_napari_conda.md

@@ -3,7 +3,7 @@
 1. install [miniconda](https://docs.conda.io/en/latest/miniconda.html)
 1. open a terminal window
 	* Windows: *Anaconda Prompt (Miniconda3)*, e.g. type `Anaconda` in the search bar
-1. write `conda create -n skimage-napari-tutorial -c conda-forge -c euro-bioimaging python=3.10 napari=0.4.17 notebook matplotlib jupytext "scikit-image>=0.20" openijtiff` and press enter
+1. write `conda create -n skimage-napari-tutorial -c conda-forge -c euro-bioimaging python=3.10 napari=0.4.17 notebook matplotlib jupytext "scikit-image>=0.20" openijtiff napari-plot-profile` and press enter
 1. create a directory called `skimage-napari-tutorial` (e.g. on your Desktop)
 
 #### Test installation (only once)