Merge pull request #1830 from ZX-WT/editor_3d

added link to intro_to_3d in 3d workspace section of intro to the editor's interface

getting_started/step_by_step/intro_to_the_editor_interface.rst

@@ -115,6 +115,8 @@ Notice the text [perspective] under the toolbar, it is a button that opens a lis
 
 |image20|
 
+.. note:: Read :ref:`doc_introduction_to_3d` for more detail about **3D workspace**. 
+
 The **Script** workspace is a complete code editor with a debugger, rich
 auto-completion, and built-in code reference. Press F3 to access it, and
 F4 to search the reference.