Migrate PPI section from FSL wiki
Migrate the PPI section from the FSL wiki: https://fsl.fmrib.ox.ac.uk/fsl/fslwiki/PPI
The suggested group for this section is Task fMRI:
- The section content should be migrated into
docs/task_fmri/ppi.md. - An entry for the new page should be added to
docs/task_fmri/_sidebar.md.
This section has the following subpages on the old wiki:
Attachments for this section can be found at:
- https://git.fmrib.ox.ac.uk/paulmc/fsl-docathon-2023/-/blob/main/fsl-wiki-dump-20230817/attachments/PPIHowToRun
- https://git.fmrib.ox.ac.uk/paulmc/fsl-docathon-2023/-/blob/main/fsl-wiki-dump-20230817/attachments/PPI
- https://git.fmrib.ox.ac.uk/paulmc/fsl-docathon-2023/-/blob/main/fsl-wiki-dump-20230817/attachments/PPIZeroing
- https://git.fmrib.ox.ac.uk/paulmc/fsl-docathon-2023/-/blob/main/fsl-wiki-dump-20230817/attachments/PPIFAQ
- https://git.fmrib.ox.ac.uk/paulmc/fsl-docathon-2023/-/blob/main/fsl-wiki-dump-20230817/attachments/PPICaveats