version: Refer to nvim help on startup screen.

runtime/doc/nvim_intro.txt

@@ -4,7 +4,7 @@
 		 NVIM REFERENCE MANUAL    by Thiago de Arruda
 
 
-Introduction to Nvim						   *nvim-intro*
+Introduction to Nvim					*nvim* *nvim-intro*
 
 This is an introduction to Vim users that are just getting started with Nvim.
 It is not meant for Vim beginners. For a basic introduction to Vim,

src/nvim/version.c

@@ -917,6 +917,7 @@ void intro_message(int colon)
     "",
     N_("type  :q<Enter>               to exit         "),
     N_("type  :help<Enter>  or  <F1>  for on-line help"),
+    N_("type  :help nvim<Enter>       for Neovim help "),
   };
 
   // blanklines = screen height - # message lines