Update mamba install

[jackyko1991]

update package path to match conda-forge: https://anaconda.org/lcerrone/plantseg

[lorenzocerrone]

Hi @jackyko1991,

Indeed the installation instructions are broken in the current main, thanks for spotting it and for your pull request!!

Recently we moved plantseg deployement from my channel lcerrone to conda-forge. But in doing so we also changed the pachage name from plantseg to plant-seg.

So, the correct installation command from now on should be:

mamba create -n plant-seg -c pytorch -c nvidia -c conda-forge pytorch pytorch-cuda=12.1 pyqt plant-seg 

Could you please update your pull request before I merge it.

[jackyko1991]

@lorenzocerrone readme updated with new package name

[lorenzocerrone]

Thanks a lot!