Fix comments

Assets/ScriptableRenderLoop/HDRenderLoop/Material/Lit/Lit.hlsl

 
         [branch] if (lightData.lightType == GPULIGHTTYPE_SPOT)
         {
-            // Perform a perspective projection of the hemisphere onto the disk.
+            // Perform the perspective projection of the hemisphere onto the disk.
-            // Rescale the projective coordinates into the [0, 1]^2 range.
+            // Rescale the projective coordinates to fit into the [-1, 1]^2 range.
             float cotOuterHalfAngle = lightData.size.x;
             coord.xy *= cotOuterHalfAngle;