Update docs/tutorial-for-unity.md

Co-authored-by: jdrueckert <[email protected]>

docs/tutorial-for-unity.md

@@ -16,7 +16,7 @@ _Note: This requires technology for a rendering-specific layer. Currently, it's
 
 a node has Inputs and Outputs, it's input are result from previous node, and it's output can be next node's input.
 
-For example, highPass node use `_SceneColor` as input, then bloom node use both `_SceneColor` and highpass node's output as input.
+For example, a highPass node uses `_SceneColor` as input, then a bloom node uses both `_SceneColor` and the highpass node's output as input.
 
 The Unity equivalent of `_SceneColor` is the scene texture.
 highpass node is a node to grab light area then send to blur node to make the bright area of bloom.