Fix Doxygen for TLS 1.3 PSK binder helper
Signed-off-by: Hanno Becker <hanno.becker@arm.com>
diff --git a/library/ssl_tls13_keys.h b/library/ssl_tls13_keys.h
index 4b9c68e..3b96998 100644
--- a/library/ssl_tls13_keys.h
+++ b/library/ssl_tls13_keys.h
@@ -476,7 +476,7 @@
* \param md_type The hash algorithm associated to the PSK \p psk.
* \param psk The buffer holding the PSK for which to create a binder.
* \param psk_len The size of \p psk in bytes.
- * \param is_external This indicates whether the PSK \p psk is externally
+ * \param psk_type This indicates whether the PSK \p psk is externally
* provisioned (#MBEDTLS_SSL_TLS1_3_PSK_EXTERNAL) or a
* resumption PSK (#MBEDTLS_SSL_TLS1_3_PSK_RESUMPTION).
* \param transcript The handshake transcript up to the point where the