bench: refactor to use string interpolation in boolean

PR-URL: #11623
Ref: #8647

Reviewed-by: Philipp Burckhardt <pburckhardt@outlook.com>

Author: anandkaranubc

lib/node_modules/@stdlib/boolean/ctor/benchmark/benchmark.js

@@ -21,13 +21,14 @@
 // MODULES //
 
 var bench = require( '@stdlib/bench' );
+var format = require( '@stdlib/string/format' );
 var pkg = require( './../package.json' ).name;
 var Bool = require( './../lib' );
 
 
 // MAIN //
 
-bench( pkg+'::constructor', function benchmark( b ) {
+bench( format( '%s::constructor', pkg ), function benchmark( b ) {
 	var values;
 	var o;
 	var i;
@@ -58,7 +59,7 @@ bench( pkg+'::constructor', function benchmark( b ) {
 	b.end();
 });
 
-bench( pkg+'::function', function benchmark( b ) {
+bench( format( '%s::function', pkg ), function benchmark( b ) {
 	var values;
 	var bool;
 	var o;