Merge pull request #717 from ajinkya-kulkarni/patch-2

Fixed calling `cellpose[gui]`

README.md

@@ -82,7 +82,7 @@ If you are using a GPU, make sure its drivers and the cuda libraries are correct
 3. Create a new environment with `conda create --name cellpose python=3.8`. We recommend python 3.8, but python 3.9 and 3.10 will likely work as well.
 4. To activate this new environment, run `conda activate cellpose`
 5. To install the minimal version of cellpose, run `python -m pip install cellpose`.  
-6. To install cellpose and the GUI, run `python -m pip install cellpose[gui]`. If you're on a zsh server, you may need to use ' ' around the cellpose[gui] call: `python -m pip install 'cellpose[gui]'.
+6. To install cellpose and the GUI, run `python -m pip install cellpose[gui]`. If you're on a zsh server, you may need to use ' ' around the cellpose[gui] call: `python -m pip install 'cellpose[gui]'`.
 
 To upgrade cellpose (package [here](https://pypi.org/project/cellpose/)), run the following in the environment: