message: fix typo in sg node value ImGui widgets
diff: @@ -170,7 +170,7 @@ namespace ospray {
  {"float", sgWidget_float},
  {"int", sgWidget_int},
  {"vec2i", sgWidget_vec2i},
  - {"vec2f", sgWidget_vec2i},
  + {"vec2f", sgWidget_vec2f},
  {"vec3f", sgWidget_vec3f},
  {"box3f", sgWidget_box3f},
  {"string", sgWidget_string},
  