bug#28835: guild help refers to non-existing info node

[Maxim Cournoyer]

While attempting to learn what I could do with guild, I stumbled on the 
following:

guild help
Usage: guild COMMAND [ARGS]
Run command-line scripts provided by GNU Guile and related programs.

[...]

Report guild bugs to address@hidden
GNU Guile home page: <http://www.gnu.org/software/guile/>
General help using GNU software: <http://www.gnu.org/gethelp/>
For complete documentation, run: info guile 'Using Guile Tools'

Running 'info guile 'Using Guile Tools' brings us to the top of the
Guile Reference Manual with the following warning in the mini-buffer:

--8<---------------cut here---------------start------------->8---
No menu item 'Using Guile Tools' in node '(guile.info.gz)Top'.
--8<---------------cut here---------------end--------------->8---

Maxim