DOC: Fix typo in README

Fix typo in `README`.

Author: jhlegarreta

README.md

@@ -29,7 +29,7 @@ Run `wm_quality_control_tractography.py --help` to test if the installation is s
 
     ```bash wm_apply_ORG_atlas_to_subject.sh -i input_tractography.vtk -o output_dir -a path_to_atlas/ORG-Atlases-v1.x -s /Applications/Slicer5.2.2.app/Contents/MacOS/Slicer -d 1 -m /Applications/Slicer5.2.2.app/Contents/Extensions-31382/SlicerDMRI/lib/Slicer-5.2/cli-modules/FiberTractMeasurements```
 
-* A step-by-step tutorial to explain the detailed computional process within the pipeline is provided [here](https://github.com/SlicerDMRI/whitematteranalysis/blob/master/doc/subject-specific-tractography-parcellation.md).
+* A step-by-step tutorial to explain the detailed computational process within the pipeline is provided [here](https://github.com/SlicerDMRI/whitematteranalysis/blob/master/doc/subject-specific-tractography-parcellation.md).
 
 * The names of the anatomical bundles WMA extracts can be found in the [bundles](doc/bundles.md) page.