Removed unnecessary single parenthesis
(no tracker issue created)
http://lists.gnu.org/archive/html/
bug-lilypond/2015-10/msg00102.html
determine the absolute pitch of the first note inside.
@item no explicit starting pitch
-The form @code{\relative @{ gis''' @dots{} @}}) serves
+The form @code{\relative @{ gis''' @dots{} @}} serves
as a compact version of the previous option: the first note
inside is written in absolute pitch itself. (This happens to be
equivalent to choosing @code{f} as the reference pitch.)