Document architecture changes
diff --git a/docs/architecture.rst b/docs/architecture.rst
index 7b39495..0a9550c 100644
--- a/docs/architecture.rst
+++ b/docs/architecture.rst
@@ -8,11 +8,11 @@
 
 ``cryptography`` has three different layers:
 
-* ``cryptography.c``: This package contains bindings to low level cryptographic
-  libraries. Our initial target will be OpenSSL.
+* ``cryptography.bindings``: This package contains bindings to low level
+  cryptographic libraries. Our initial target will be OpenSSL.
 * ``cryptography.primitives``: This packages contains low level algorithms,
   things like ``AES`` or ``SHA1``. This is implemented on top of
-  ``cryptography.c``.
+  ``cryptography.bindings``.
 * ``cryptography``: This package contains higher level recipes, for example
   "encrypt and then MAC". This is implemented on top of
   ``cryptography.primitives``.