fix docstest errors in render graph

lyra-game/src/render/graph/mod.rs

@@ -432,7 +432,7 @@ impl RenderGraph {
     /// name is not found in the graph, a panic will occur.
     /// 
     /// # Example:
-    /// ```rust,nobuild
+    /// ```nobuild
     /// graph.set_bind_groups(
     ///     &mut pass,
     ///     &[

lyra-game/src/render/shaders/base.wgsl

@@ -146,8 +146,6 @@ fn fs_main(in: VertexOutput) -> @location(0) vec4<f32> {
 
     let light_object_res = light_res * (object_color.xyz);
     return vec4<f32>(light_object_res, object_color.a);
-
-    //return debug_grid(in);
 }
 
 fn debug_grid(in: VertexOutput) -> vec4<f32> {