Minor edit

Author: gaearon

content/tutorial/tutorial.md

@@ -830,7 +830,7 @@ class Game extends React.Component {
 }
 ```
 
-Next, we'll have the Board component receive `squares` and `onClick` props from the Game component by props. Since we now have a single click handler in Board for many Squares, we'll need to pass the location of each Square into the `onClick` handler to indicate which Square was clicked. Here are the required steps to transform the Board component:
+Next, we'll have the Board component receive `squares` and `onClick` props from the Game component. Since we now have a single click handler in Board for many Squares, we'll need to pass the location of each Square into the `onClick` handler to indicate which Square was clicked. Here are the required steps to transform the Board component:
 
 * Delete the `constructor` in Board.
 * Replace `this.state.squares[i]` with `this.props.squares[i]` in Board's `renderSquare`.