Rename rigid-body static to fixed

examples2d/joints2.rs

@@ -30,7 +30,7 @@ pub fn init_world(testbed: &mut Testbed) {
             let fi = i as f32;
 
             let status = if i == 0 && k == 0 {
-                RigidBodyType::Static
+                RigidBodyType::Fixed
             } else {
                 RigidBodyType::Dynamic
             };