fix ESLint issue

Author: gkbishnoi07

lib/node_modules/@stdlib/stats/base/variancewd/lib/accessors.js

@@ -45,12 +45,12 @@
 */
 
 function variancewd(N, correction, x, strideX, offsetX) {
-	var xbuf;
 	var delta2;
 	var delta;
+	var xbuf;
 	var get;
-	var mu;
 	var M2;
+	var mu;
 	var ix;
 	var v;
 	var n;
@@ -83,4 +83,9 @@ function variancewd(N, correction, x, strideX, offsetX) {
 	return M2 / n;
 }
 
+/**
+* Exports function for computing the variance of a strided array using Welford's algorithm and accessors.
+*
+* @type {Function}
+*/
 module.exports = variancewd;