minor update to comments and material values (#898)

Author: amyZepp

xr/src/main/java/com/example/xr/compose/SpatialGltfModel.kt

@@ -46,7 +46,7 @@ fun SpatialGltfModelExample(){
     // [START androidxr_compose_SpatialGltfModelState]
     val modelState = rememberSpatialGltfModelState(
         source = SpatialGltfModelSource.fromPath(
-            Paths.get("models/bugdroid_animated_wave.glb")
+            Paths.get("models/model_name.glb")
         )
     )
     // [END androidxr_compose_SpatialGltfModelState]
@@ -84,8 +84,8 @@ fun SpatialGltfModelExample(){
             it.setBaseColorFactor(
                 Vector4(
                     x = 0.5f,
-                    y = 0.5f,
-                    z = 1.0f,
+                    y = 0.0f,
+                    z = 0.5f,
                     w = 1.0f
                 )
             )
@@ -111,7 +111,6 @@ fun SpatialGltfModelExample(){
     // [END androidxr_compose_SpatialGltfModelIntrospection]
 
     // [START androidxr_compose_SpatialGltfModelLoad]
-    // Render the 3D model into the spatial subspace.
     SpatialGltfModel(state = modelState, modifier = SubspaceModifier)
     // [END androidxr_compose_SpatialGltfModelLoad]
 }

xr/src/main/java/com/example/xr/scenecore/MaterialOverride.kt

@@ -41,7 +41,7 @@ private class MaterialOverride(val xrSession: Session) {
                 x = 0.5f,
                 y = 0.0f,
                 z = 0.5f,
-                w = 0.0f
+                w = 1.0f
             )
         )
         // [END androidxr_scenecore_material_override_setBaseColor]