Fix description of `manual_correction.py`

[sandrinebedard]

Here are a few probems in the description:

• [ ] -path-derivative and -path-out are kind of redundant/confusing. They could be merged

• [x] There are a few typos in -path-derivatives:

  • Path to the 'derivatives' BIDS-complaint folder where the corrected labels will be saved. Default: derivatives/labelsNote: if the provided folder (e.g., 'derivatives/labels') does not already exist, it will be created.Note: if segmentation or labels files already exist and you would like to correct them, provide path to them within this flag. - fixed in https://github.com/spinalcordtoolbox/manual-correction/commit/da9df494c8d0680d97c9fea371338546eb2d74fc

• [x] - load other contrast

  • how does it find the contrast? , is it or the BIDS. Could be an exmple of the contrast name and filename - fixed in https://github.com/spinalcordtoolbox/manual-correction/commit/a375c101c2f3dab0dd95d94474384bd3570e785c

[valosekj]

Good points, thank you! I will address them.

[valosekj]

Description fixed. The point about -path-derivative and -path-out moved to https://github.com/spinalcordtoolbox/manual-correction/issues/32.

--> closing this issue