style: trim trailing whitespaces

Author: anxhukumar

lib/node_modules/@stdlib/stats/incr/nanmean/test/test.js

@@ -60,7 +60,7 @@ tape( 'the accumulator function incrementally computes an arithmetic mean', func
 	count = 0;
 	sum = 0;
 
-	expected = []; 
+	expected = [];
 	actual = [];
 
 	acc = incrnanmean();