bench: refactor to use string interpolation in array/base/any-by

PR-URL: stdlib-js#8650
Ref: stdlib-js#8647
Reviewed-by: Athan Reines <kgryte@gmail.com>

Author: Amansingh0807

lib/node_modules/@stdlib/array/base/any-by/benchmark/benchmark.length.js

@@ -25,6 +25,7 @@ var pow = require( '@stdlib/math/base/special/pow' );
 var isBoolean = require( '@stdlib/assert/is-boolean' ).isPrimitive;
 var isPositiveInteger = require( '@stdlib/assert/is-positive-integer' ).isPrimitive;
 var zeros = require( '@stdlib/array/base/zeros' );
+var format = require( '@stdlib/string/format' );
 var pkg = require( './../package.json' ).name;
 var anyBy = require( './../lib' );
 
@@ -90,7 +91,7 @@ function main() {
 		len = pow( 10, i );
 
 		f = createBenchmark( len );
-		bench( pkg+':dtype=generic,len='+len, f );
+		bench( format( '%s:dtype=generic,len=%d', pkg, len ), f );
 	}
 }