Fix debugutils load Shaders failed for Android (#1107)

[Why]
Sample debugutils's shaders path is incorrected in build.gradle for Android.
Missing shaders will cause sample debugutils crash.

[How]
Correct sample debugutils's shaders path for Android.

android/examples/debugutils/build.gradle

@@ -49,8 +49,8 @@ task copyTask {
     }
 
     copy {
-       from rootProject.ext.shaderPath + 'glsl/debugUtils'
-       into 'assets/shaders/glsl/debugUtils'
+       from rootProject.ext.shaderPath + 'glsl/debugutils'
+       into 'assets/shaders/glsl/debugutils'
        include '*.*'
     }