fix case bug in test

Author: marcobarilari

tests/test_extractRoiFromAtlas.m

@@ -45,7 +45,7 @@ function test_extractRoiFromAtlas_visfAtlas()
 
   roiImage = extractRoiFromAtlas(pwd, 'visfatlas', 'pFus', 'L');
 
-  assertEqual(exist(fullfile(pwd, 'hemi-L_space-MNI_atlas-visfAtlas_label-pFus_mask.nii'), ...
+  assertEqual(exist(fullfile(pwd, 'hemi-L_space-MNI_atlas-visfatlas_label-pFus_mask.nii'), ...
                     'file'), ...
               2);