Merge pull request #7906 from neznaika0/docs-publisher-path-1

docs: Improve publisher.rst

Author: kenjis

user_guide_src/source/libraries/publisher.rst

@@ -120,6 +120,8 @@ to keep up with. You can create a publication definition in your project to sync
 
 .. literalinclude:: publisher/009.php
 
+.. note:: Directory ``$destination`` must be created before executing the command.
+
 Now add the dependency via Composer and call ``spark publish`` to run the publication:
 
 .. code-block:: console

user_guide_src/source/libraries/publisher/009.php

@@ -13,7 +13,7 @@ class BootstrapPublisher extends Publisher
      *
      * @var string
      */
-    protected $source = 'vendor/twbs/bootstrap/';
+    protected $source = VENDORPATH . 'twbs/bootstrap/';
 
     /**
      * FCPATH is always the default destination,