Change mojo URLs from mojo://mojo_foo to mojo://foo.

mojo/examples/nesting_app/nesting_app.cc

Index: mojo/examples/nesting_app/nesting_app.cc
diff --git a/mojo/examples/nesting_app/nesting_app.cc b/mojo/examples/nesting_app/nesting_app.cc
index e3bcbcdab0976368f21fb77f33e3b1dfaa27b527..4473d6f7c9367dfc187cad427426743bf7ea9423 100644
--- a/mojo/examples/nesting_app/nesting_app.cc
+++ b/mojo/examples/nesting_app/nesting_app.cc
@@ -26,7 +26,7 @@ namespace mojo {
 namespace examples {
 
 namespace {
-const char kEmbeddedAppURL[] = "mojo:mojo_embedded_app";
+const char kEmbeddedAppURL[] = "mojo:embedded_app";
 }
 
 class NestingApp;