doc: remove mentions of vimrc_example

closes #8426

runtime/tutor/en/vim-01-beginner.tutor

@@ -906,16 +906,13 @@ You can find help on just about any subject, by giving an argument to the
 Vim has many more features than Vi, but most of them are disabled by
 default. To start using more features you have to create a "vimrc" file.
 
- 1. Start editing the "vimrc" file. This depends on your system:
-    `:e ~/.config/nvim/init.vim`{vim} for Unix-like systems
+ 1. Start editing the "vimrc" file.
+    `:call mkdir(stdpath('config'),'p')`{vim}
+    `:exe 'edit' stdpath('config').'/init.vim'`{vim}
 
- 2. Now read the example "vimrc" file contents:
-    `:r $VIMRUNTIME/vimrc_example.vim`{vim}
-
- 3. Write the file with:
+ 2. Write the file with:
     `:w`{vim}
 
-  The next time you start Vim it will use syntax highlighting.
   You can add all your preferred settings to this "vimrc" file.
   For more information type `:help vimrc-intro`{vim}.