Make path notation apparent in __::has() documentation

Author: MonsieurV

README.md

@@ -235,7 +235,7 @@ __::groupBy($a, 'continent');
 ##### [__::has](src/__/collections/has.php)
 Returns true if the collection contains the requested key.
 ```php
-__::has(['foo' => 'bar', 'foz' => 'baz'], 'foo');
+__::has(['foo' => ['bar' => 'num'], 'foz' => 'baz'], 'foo.bar');
 // >> true
 ```
 

src/__/collections/has.php

@@ -7,7 +7,7 @@
  *
  * In constrast to isset(), __::has() returns true if the key exists but is null.
  *
- ** __::hasKeys(['foo' => 'bar', 'foz' => 'baz'], 'foo');
+ ** __::has(['foo' => ['bar' => 'num'], 'foz' => 'baz'], 'foo.bar');
  ** // → true
  *
  ** __::hasKeys((object) ['foo' => 'bar', 'foz' => 'baz'], 'bar');