bench: refactor to use string interpolation in math/base/special/atanhf

PR-URL: #9861

Reviewed-by: Philipp Burckhardt <pburckhardt@outlook.com>
Signed-off-by: Harsh <149176984+hrshya@users.noreply.github.com>

Author: hrshya

lib/node_modules/@stdlib/math/base/special/atanhf/benchmark/benchmark.js

@@ -21,6 +21,7 @@
 // MODULES //
 
 var bench = require( '@stdlib/bench' );
+var format = require( '@stdlib/string/format' );
 var uniform = require( '@stdlib/random/array/uniform' );
 var isnanf = require( '@stdlib/math/base/assert/is-nanf' );
 var f32 = require( '@stdlib/number/float64/base/to-float32' );
@@ -63,7 +64,7 @@ bench( pkg, function benchmark( b ) {
 	b.end();
 });
 
-bench( pkg+'::built-in', opts, function benchmark( b ) {
+bench( format( '%s::built-in', pkg ), opts, function benchmark( b ) {
 	var opts;
 	var x;
 	var y;

lib/node_modules/@stdlib/math/base/special/atanhf/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 uniform = require( '@stdlib/random/array/uniform' );
 var isnanf = require( '@stdlib/math/base/assert/is-nanf' );
 var tryRequire = require( '@stdlib/utils/try-require' );
@@ -38,7 +39,7 @@ var opts = {
 
 // MAIN //
 
-bench( pkg+'::native', opts, function benchmark( b ) {
+bench( format( '%s::native', pkg ), opts, function benchmark( b ) {
 	var opts;
 	var x;
 	var y;