Fix default mappings file argument for fit-model-ceres

examples/fit-model-ceres.cpp

@@ -145,7 +145,7 @@ int main(int argc, char *argv[])
 				"an input image")
 			("landmarks,l", po::value<fs::path>(&landmarksfile)->required()->default_value("data/image_0010.pts"),
 				"2D landmarks for the image, in ibug .pts format")
-			("mapping,p", po::value<fs::path>(&mappingsfile)->required()->default_value("../share/ibug2did.txt"),
+			("mapping,p", po::value<fs::path>(&mappingsfile)->required()->default_value("../share/ibug_to_sfm.txt"),
 				"landmark identifier to model vertex number mapping")
 			("model-contour,c", po::value<fs::path>(&contourfile)->required()->default_value("../share/model_contours.json"),
 				"file with model contour indices")