crypto: fix a couple of typos in the documentation
@@ -175,7 +175,7 @@ ngtcp2_crypto_packet_protection_ivlen(const ngtcp2_crypto_aead *aead);
/**
* @function
*
- * `ngtcp2_crypto_derive_packet_protection_key` dervies packet
+ * `ngtcp2_crypto_derive_packet_protection_key` derives packet
* protection key. This function writes packet protection key into
* the buffer pointed by |key|. |key| must point to the buffer which
* is at least ngtcp2_crypto_aead_keylen(aead) bytes long. This
@@ -237,7 +237,7 @@ ngtcp2_crypto_encrypt_cb(uint8_t *dest, const ngtcp2_crypto_aead *aead,
* `ngtcp2_crypto_decrypt` decrypts |ciphertext| of length
* |ciphertextlen| and writes the plaintext into the buffer pointed by
* |dest|. The length of plaintext is ciphertextlen -
- * ngtcp2_crypto_aead_taglen(aead) bytes log. |dest| must have enough
+ * ngtcp2_crypto_aead_taglen(aead) bytes long. |dest| must have enough
* capacity to store the plaintext. It is allowed to specify the same
* value to |dest| and |ciphertext|.
*
