bench: fix include path

Signed-off-by: Athan <kgryte@gmail.com>

Author: kgryte

lib/node_modules/@stdlib/number/float16/base/to-word/benchmark/c/benchmark.c

@@ -18,7 +18,7 @@
 
 #include "stdlib/number/float16/base/to_word.h"
 #include "stdlib/number/float64/base/to_float16.h"
-#include "stdlib/number/float64/ctor.h"
+#include "stdlib/number/float16/ctor.h"
 #include <stdlib.h>
 #include <stdio.h>
 #include <stdint.h>