docs: update examples

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---

Author: kgryte

lib/node_modules/@stdlib/ndarray/base/includes/README.md

@@ -140,6 +140,8 @@ var v = {
     'offset': 0,
     'order': x.order
 };
+console.log( 'Search element: %d', v.data[ 0 ] );
+
 var out = includes( [ x, v ] );
 console.log( out );
 ```

lib/node_modules/@stdlib/ndarray/base/includes/examples/index.js

@@ -42,5 +42,7 @@ var v = {
 	'offset': 0,
 	'order': x.order
 };
+console.log( 'Search element: %d', v.data[ 0 ] );
+
 var out = includes( [ x, v ] );
 console.log( out );