runtime(doc): remove outdated Contribution section in pi_tutor

Problem:  The Github repo link in the Contribution section has been
          archived for 5 years. So people who want to contribute to the
          tutor plugin should just send PR to Vim repo, similar to most
          other Vim features, so there is no need for a Contribution
          section in the plugin doc.

Solution: Replace it with an Original Author note at the beginning of
          the help document.

closes: #17341

Signed-off-by: Phạm Bình An <111893501+brianhuster@users.noreply.github.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>

diff --git a/runtime/doc/pi_tutor.txt b/runtime/doc/pi_tutor.txt
index 590d2e4b4b4f214b0aa9bb50758b65efe037f593..9b1de1f702e9a23910ccd7fe7d7b40dd8fa37045 100644 (file)
--- a/runtime/doc/pi_tutor.txt
+++ b/runtime/doc/pi_tutor.txt
@@ -1,10 +1,12 @@
-*pi_tutor.txt*    For Vim version 9.1.  Last change: 2024 Dec 17
+*pi_tutor.txt*    For Vim version 9.1.  Last change: 2025 May 19
 
 INTERACTIVE TUTORIALS FOR VIM                   *vim-tutor-mode*
 
 vim-tutor-mode provides a system to follow and create interactive tutorials
 for vim and third party plugins.  It replaces the venerable `vimtutor` system.
 
+Original Author: Felipe Morales <https://github.com/fmoralesc>
+
 =============================================================================
 1. Usage                                                      *vim-tutor-usage*
 
@@ -47,13 +49,5 @@ to be detected by the :Tutor command.
 It is recommended to use a less formal style when writing tutorials than in
 regular documentation (unless the content requires it).
 
-=============================================================================
-3. Contributing
-
-Development of the plugin is done over at github [1].  Feel free to report
-issues and make suggestions.
-
-[1]: https://github.com/fmoralesc/vim-tutor-mode
-
 =============================================================================
  vim:tw=78:ts=8:noet:ft=help:norl: