improve language for gcm docs
diff --git a/docs/hazmat/primitives/symmetric-encryption.rst b/docs/hazmat/primitives/symmetric-encryption.rst
index 9d4f035..c97d6b0 100644
--- a/docs/hazmat/primitives/symmetric-encryption.rst
+++ b/docs/hazmat/primitives/symmetric-encryption.rst
@@ -340,11 +340,11 @@
byte has been decrypted. GCM provides NO guarantees of ciphertext
integrity until decryption is complete.
- GCM (Galois Counter Mode) is a mode of operation for block ciphers. It
- is an AEAD (authenticated encryption with additional data) mode. AEAD
- is a type of block cipher mode that encrypts the message as well as
- authenticating it (and optionally additional data that is not encrypted)
- simultaneously. Additional means of verifying integrity (like
+ GCM (Galois Counter Mode) is a mode of operation for block ciphers. An
+ AEAD (authenticated encryption with additional data) mode is a type of
+ block cipher mode that encrypts the message as well as authenticating it
+ (and optionally additional data that is not encrypted) simultaneously.
+ Additional means of verifying integrity (like
:doc:`HMAC </hazmat/primitives/hmac>`) are not necessary.
:param bytes initialization_vector: Must be random bytes. They do not need