vte3: add missing prefix into comment
vte3: add missing prefix into comment

/* __RBGIO2CONVERSIONS_H__ */ ->
/* __VTE3_RBGIO2CONVERSIONS_H__ */
     ^^^^^

kitachro/ruby-gnome2,kitachro/ruby-gnome2,kitachro/ruby-gnome2,kitachro/ruby-gnome2,kitachro/ruby-gnome2