Fix typo

trans/models/subproject.py

@@ -155,7 +155,7 @@ class SubProject(models.Model, PercentMixin, URLMixin):
         blank=True,
         choices=SCRIPT_CHOICES,
         help_text=ugettext_lazy(
-            'Script to be executed before commiting translation, '
+            'Script to be executed before committing translation, '
             'please check documentation for more details.'
         ),
     )