Fixed doc

src/randomx.h

@@ -77,7 +77,7 @@ void randomx_release_cache(randomx_cache* cache);
  * @param flags is the initialization flags. Only one flag is supported (can be set or not set):
  *        RANDOMX_FLAG_LARGE_PAGES - allocate memory in large pages
  *
- * @return Pointer to an allocated randomx_cache structure.
+ * @return Pointer to an allocated randomx_dataset structure.
  *         NULL is returned if memory allocation fails.
  */
 randomx_dataset *randomx_alloc_dataset(randomx_flags flags);