typo

documentation/competitions/Toothfairy2/readme.md

@@ -17,7 +17,7 @@ mirroring and train for 1500 instead of the standard 1000 epochs. Training was e
 
 # Experiment Planning and Preprocessing
 Adapt and run the [dataset conversion script](../../../nnunetv2/dataset_conversion/Dataset119_ToothFairy2_All.py). 
-This script just converts the mhs files to nifti (smaller file size) and removes the unused label ids.
+This script just converts the mha files to nifti (smaller file size) and removes the unused label ids.
 
 ## Extract fingerprint:
 `nnUNetv2_extract_fingerprint -d 119 -np 48`