bench: fix description

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

Author: kgryte

lib/node_modules/@stdlib/array/little-endian-float32/benchmark/benchmark.of.js

@@ -47,7 +47,7 @@ bench( format( '%s:of', pkg ), function benchmark( b ) {
 	b.end();
 });
 
-bench( format( '%s:len=5', pkg ), function benchmark( b ) {
+bench( format( '%s:of:len=5', pkg ), function benchmark( b ) {
 	var buf;
 	var arr;
 	var i;