bench: use string interpolation in stats/base/dists/cauchy/pdf

PR-URL: #10064
Reviewed-by: Athan Reines <kgryte@gmail.com>

Author: Om-A-osc

lib/node_modules/@stdlib/stats/base/dists/cauchy/pdf/benchmark/benchmark.js

@@ -23,6 +23,7 @@
 var bench = require( '@stdlib/bench' );
 var uniform = require( '@stdlib/random/array/uniform' );
 var isnan = require( '@stdlib/math/base/assert/is-nan' );
+var format = require( '@stdlib/string/format' );
 var EPS = require( '@stdlib/constants/float64/eps' );
 var pkg = require( './../package.json' ).name;
 var pdf = require( './../lib' );
@@ -60,7 +61,7 @@ bench( pkg, function benchmark( b ) {
 	b.end();
 });
 
-bench( pkg+':factory', function benchmark( b ) {
+bench( format( '%s::factory', pkg ), function benchmark( b ) {
 	var mypdf;
 	var gamma;
 	var opts;

lib/node_modules/@stdlib/stats/base/dists/cauchy/pdf/benchmark/benchmark.native.js

@@ -22,6 +22,7 @@
 
 var resolve = require( 'path' ).resolve;
 var bench = require( '@stdlib/bench' );
+var format = require( '@stdlib/string/format' );
 var EPS = require( '@stdlib/constants/float64/eps' );
 var uniform = require( '@stdlib/random/array/uniform' );
 var isnan = require( '@stdlib/math/base/assert/is-nan' );
@@ -39,7 +40,7 @@ var opts = {
 
 // MAIN //
 
-bench( pkg+'::native', opts, function benchmark( b ) {
+bench( format( '%s::native', pkg ), opts, function benchmark( b ) {
 	var gamma;
 	var opts;
 	var x0;