additional doc work on ctr
diff --git a/docs/primitives/symmetric-encryption.rst b/docs/primitives/symmetric-encryption.rst
index a1f8ba3..7899e67 100644
--- a/docs/primitives/symmetric-encryption.rst
+++ b/docs/primitives/symmetric-encryption.rst
@@ -88,14 +88,13 @@
CTR (Counter) is a mode of operation for block ciphers. It is considered
cryptographically strong.
- :param bytes nonce: Recommended to be random. It is critical to never reuse
- a ```nonce``` (or its subsequent incremented values)
- with a given key. Any reuse of the nonce with the same
- key compromises the security of every message encrypted
- with that key. Must be the same number of bytes as the
- ```block_size``` of the cipher with a given key. The
- nonce does not need to be kept secret and may be
- included alongside the ciphertext.
+ :param bytes nonce: Should be random bytes. It is critical to never reuse a
+ ``nonce`` with a given key. Any reuse of a nonce
+ with the same key compromises the security of every
+ message encrypted with that key. Must be the same
+ number of bytes as the ``block_size`` of the cipher
+ with a given key. The nonce does not need to be kept
+ secret and may be included alongside the ciphertext.
.. class:: cryptography.primitives.block.modes.OFB(initialization_vector)