fix: resolves lint issues

Signed-off-by: Harsh <149176984+hrshya@users.noreply.github.com>

Author: hrshya

lib/node_modules/@stdlib/stats/base/dists/negative-binomial/pmf/benchmark/benchmark.js

@@ -77,7 +77,7 @@ bench( pkg+':factory', function benchmark( b ) {
 	opts = {
 		'dtype': 'float64'
 	};
-	p = uniform( 100, 0.0, 80.0, opts );
+	x = uniform( 100, 0.0, 80.0, opts );
 
 	b.tic();
 	for ( i = 0; i < b.iterations; i++ ) {