Resolve lint errors

Author: kgryte

lib/node_modules/@stdlib/utils/index-of/README.md

@@ -91,9 +91,9 @@ var idx = indexOf( str, 'o' );
 * Search is performed using __strict equality__ comparison. Thus,
 
   ``` javascript
-  var arr = [ 1, [1,2,3], 3 ];
+  var arr = [ 1, [ 1, 2, 3 ], 3 ];
 
-  var idx = indexOf( arr, [1,2,3] );
+  var idx = indexOf( arr, [ 1, 2, 3 ] );
   // returns -1
   ```
 
@@ -118,7 +118,7 @@ var idx = indexOf( str, 'o' );
   Obj.prototype[ 2 ] = 'bop';
 
   var obj = new Obj();
-    
+
   idx = indexOf( obj, 'bop' );
   // returns -1