gsignal: Remove a UTF-8 ellipsis from docs
gsignal: Remove a UTF-8 ellipsis from docs

Some compilers have trouble with such sequences. Visual C++ may or may
not generate a warning in this particular case depending on if the
local code page supports an ellipsis.

https://bugzilla.gnome.org/show_bug.cgi?id=767218

johne53/MB3Glib,endlessm/glib,johne53/MB3Glib,johne53/MB3Glib,endlessm/glib,johne53/MB3Glib,johne53/MB3Glib,endlessm/glib,endlessm/glib,johne53/MB3Glib,endlessm/glib