Improve function return value description
Signed-off-by: Pengyu Lv <pengyu.lv@arm.com>
diff --git a/include/mbedtls/ssl_cache.h b/include/mbedtls/ssl_cache.h
index 1eb933c..00891bc 100644
--- a/include/mbedtls/ssl_cache.h
+++ b/include/mbedtls/ssl_cache.h
@@ -132,9 +132,10 @@
* associated to \p session.
* \param session_id_len The length of \p session_id in bytes.
*
- * \return \c 0: The cache entry for session with provided ID
- * is removed or does not exist.
- * A negative error code on failure.
+ * \return \c 0 on success. This indicates the cache entry for
+ * the session with provided ID is removed or does not
+ * exist.
+ * \return A negative error code on failure.
*/
int mbedtls_ssl_cache_remove(void *data,
unsigned char const *session_id,