fix doxygen parameter wrong

Signed-off-by: Jerry Yu <jerry.h.yu@arm.com>
diff --git a/library/ssl_misc.h b/library/ssl_misc.h
index d269e6f..85c7779 100644
--- a/library/ssl_misc.h
+++ b/library/ssl_misc.h
@@ -1446,7 +1446,7 @@
  * supported.
  *
  * \param[in] ssl  SSL context
- * \param key_modes_mask  Mask of the key exchange modes to check
+ * \param kex_modes_mask  Mask of the key exchange modes to check
  *
  * \return 0 if at least one of the key exchange modes is supported,
  *         <>0 otherwise.