Fixed typos in LONG.md

Author: christianewert

doc/overview/LONG.md

@@ -101,7 +101,7 @@ HOWEVER, this requires that you process these cases also through the longitudina
 2. [Template Seg] Next, the template image will be segmented via a call to `run_fastsurfer.sh --sid <templateID> --base --seg_only ...` where the `--base` flag indicates that the input image will be taken from the already existing template directory. 
 3. [Template Surf] This is followed by the surface processing of the template  `run_fastsurfer.sh --sid <templateID> --base --surf_only ...`, which can be combined with the previous step.
 4. [Long Seg] Next, the segmentation of each time point, which can theoretically run in parallel with the previous two steps, is performed `run_fastsurfer.sh --sid <tIDn> --long <templateID> --seg_only ...`,
-5. [Long Surf] Again followed by the surface processing for each time point: `run_fastsurfer.sh --sid <tIDn> --long <templateID> --surf_only`. This step needs to wait until 3. and 4. (for this time point) are finished. In this step, for example, surfaces are initialized with the ones obtained on the template above and only fine-tuned, instead of being recreated. 
+5. [Long Surf] Again followed by the surface processing for each time point: `run_fastsurfer.sh --sid <tIDn> --long <templateID> --surf_only`. This step needs to wait until 3. and 4. (for this time point) are finished. In this step, for example, surfaces are initialized with the ones obtained on the template above and only fine-tuned, instead of being recreated from scratch. 
 
 Internally, we use `brun_fastsurfer.sh` as a helper script to process multiple time points in parallel (in the LONG steps 4. and 5.). Here, `--parallel_seg` can be passed to `long_fastsurfer.sh` to specify the number of parallel runs during the segmentation step (4), which is usually limited by GPU memory, if run on the GPU. Further, `--parallel_surf` specifies the number of parallel surface runs on the CPU and is most impactful. It can be combined with `--threads_surf 2` (or higher) to switch on parallelization of the two hemispheres in each surface block.