bench: apply review suggestion

Signed-off-by: Muhammad Haris <[email protected]>

Author: headlessNode

lib/node_modules/@stdlib/blas/ext/base/gsumkbn/benchmark/benchmark.ndarray.js

@@ -31,7 +31,7 @@ var gsumkbn = require( './../lib/ndarray.js' );
 // VARIABLES //
 
 var options = {
-	'dtype': 'float64'
+	'dtype': 'generic'
 };