Corrected spelling of options

preferences.py

@@ -38,27 +38,27 @@ class MBPreferences(bpy.types.AddonPreferences):
         description="If enabled, auto-check for updates using an interval",
         default=False,
     )
-    updater_intrval_months = bpy.props.IntProperty(
+    updater_interval_months = bpy.props.IntProperty(
         name='Months',
         description="Number of months between checking for updates",
         default=0,
         min=0
     )
-    updater_intrval_days = bpy.props.IntProperty(
+    updater_interval_days = bpy.props.IntProperty(
         name='Days',
         description="Number of days between checking for updates",
         default=7,
         min=0,
         max=31
     )
-    updater_intrval_hours = bpy.props.IntProperty(
+    updater_interval_hours = bpy.props.IntProperty(
         name='Hours',
         description="Number of hours between checking for updates",
         default=0,
         min=0,
         max=23
     )
-    updater_intrval_minutes = bpy.props.IntProperty(
+    updater_interval_minutes = bpy.props.IntProperty(
         name='Minutes',
         description="Number of minutes between checking for updates",
         default=0,