Minor documentation/comment fixes

typos, overlong lines

Signed-off-by: Manuel Pégourié-Gonnard <manuel.pegourie-gonnard@arm.com>
diff --git a/include/mbedtls/cipher.h b/include/mbedtls/cipher.h
index 9ae2f06..1cafa6e 100644
--- a/include/mbedtls/cipher.h
+++ b/include/mbedtls/cipher.h
@@ -992,9 +992,9 @@
  * \param iv            The nonce to use. This must be a readable buffer of
  *                      at least \p iv_len Bytes and may be \c NULL if \p
  *                      iv_len is \c 0.
- * \param iv_len        The length of the nonce. For AEAD ciphers, this must satisfy the
- *                      constraints imposed by the cipher used. For NIST_KW,
- *                      this must be \c 0.
+ * \param iv_len        The length of the nonce. For AEAD ciphers, this must
+ *                      satisfy the constraints imposed by the cipher used.
+ *                      For NIST_KW, this must be \c 0.
  * \param ad            The additional data to authenticate. This must be a
  *                      readable buffer of at least \p ad_len Bytes, and may
  *                      be \c NULL is \p ad_len is \c 0.
@@ -1047,9 +1047,9 @@
  * \param iv            The nonce to use. This must be a readable buffer of
  *                      at least \p iv_len Bytes and may be \c NULL if \p
  *                      iv_len is \c 0.
- * \param iv_len        The length of the nonce. For AEAD ciphers, this must satisfy the
- *                      constraints imposed by the cipher used. For NIST_KW,
- *                      this must be \c 0.
+ * \param iv_len        The length of the nonce. For AEAD ciphers, this must
+ *                      satisfy the constraints imposed by the cipher used.
+ *                      For NIST_KW, this must be \c 0.
  * \param ad            The additional data to authenticate. This must be a
  *                      readable buffer of at least \p ad_len Bytes, and may
  *                      be \c NULL is \p ad_len is \c 0.