Fix typo.

Author: WaVEV

django_mongodb/__init__.py

@@ -7,9 +7,9 @@
 check_django_compatability()
 
 from .expressions import register_expressions  # noqa: E402
-from .functions import register_functinos  # noqa: E402
+from .functions import register_functions  # noqa: E402
 from .lookups import register_lookups  # noqa: E402
 
 register_expressions()
-register_functinos()
+register_functions()
 register_lookups()

django_mongodb/functions.py

@@ -18,5 +18,5 @@ def extract(self, compiler, connection):
     return {operator: f"${lhs_mql}"}
 
 
-def register_functinos():
+def register_functions():
     Extract.as_mql = extract