bench: use @stdlib/string/format in @stdlib/string/from-code-point

Author: Planeshifter

lib/node_modules/@stdlib/string/from-code-point/benchmark/benchmark.apply.js

@@ -25,6 +25,7 @@ var randu = require( '@stdlib/random/base/randu' );
 var floor = require( '@stdlib/math/base/special/floor' );
 var pow = require( '@stdlib/math/base/special/pow' );
 var UNICODE_MAX = require( '@stdlib/constants/unicode/max' );
+var format = require( '@stdlib/string/format' );
 var pkg = require( './../package.json' ).name;
 var fromCodePoint = require( './../lib' );
 
@@ -105,10 +106,10 @@ function main() {
 		len = pow( 10, i );
 
 		f = createBenchmark( fromCodePoint, len );
-		bench( pkg+'::apply:len='+len, f );
+		bench( format( '%s::apply:len=%d', pkg, len ), f );
 
 		f = createBenchmark( String.fromCodePoint, len ); // eslint-disable-line  n/no-unsupported-features/es-builtins, n/no-unsupported-features/es-syntax
-		bench( pkg+'::apply,built-in:len='+len, opts, f );
+		bench( format( '%s::apply,built-in:len=%d', pkg, len ), opts, f );
 	}
 }