#5304 Scheme typo in Notation Reference 3.3.1

[Federico Bruni]

In Notation Reference 3.3.1 (Including LilyPond files)
there's a Scheme typo: #relative-includes should be replaced with
'relative-includes

[lilypond-git (master %=)]$ git grep -n '#relative-includes' Documentation/
Documentation/es/notation/input.itely:2186:#relative-includes #t)} de manera que se interpreten
Documentation/fr/notation/input.itely:2140:@code{#(ly:set-option #relative-includes #t)} de telle sorte
Documentation/it/notation/input.itely:2076:essere precedute da @code{#(ly:set-option #relative-includes #t)} per poter
Documentation/notation/input.itely:2017:@code{#(ly:set-option #relative-includes #t)} so they are interpreted

I accidentally copied that wrong snippet and saw the error:

Parsing...
../song.ly:2:2: error: GUILE signaled an error for the expression beginning here
#
 (ly:set-option #relative-includes #t)
../song.ly:2:18: Unknown # object: #\r
../song.ly:2:2: error: syntax error, unexpected EVENT_IDENTIFIER
#

[Malte Meyn]

Issue 5304: Doc: fix scheme typo in NR

http://codereview.appspot.com/342930043

[Anonymous]

Passes make, make check and a full make doc.

[Anonymous]

Patch on countdown for April 21st

[Anonymous]

Patch counted down - please push.

[Malte Meyn]

commit cac446c7fb23ab43f79f44fa8c1c9a2594589b01
Author: Malte Meyn lilypond@maltemeyn.de
Date: Sat Apr 14 10:07:25 2018 +0200

Issue 5304: Doc: fix scheme typo in NR