Changed module name from otp to twofactor.
diff --git a/docs/hazmat/primitives/index.rst b/docs/hazmat/primitives/index.rst
index 9121d15..5199d49 100644
--- a/docs/hazmat/primitives/index.rst
+++ b/docs/hazmat/primitives/index.rst
@@ -14,4 +14,4 @@
     rsa
     constant-time
     interfaces
-    otp
+    twofactor