Updated Interaction (markdown)

Interaction.md

@@ -28,7 +28,7 @@
   map.moveTo(center, map.getResolution() * scale, options);
   ```
 
-(Alt) Drag Rotate:
+## (Alt) Drag Rotate:
 
 * No rotation constraint while rotating
 * Apply rotation constraint when releasing mouse to determine the final angle
@@ -44,7 +44,7 @@
   map.rotate(angle, options);
   ```
 
-Mouse Wheel Zoom:
+## Mouse Wheel Zoom:
 
 * Apply resolution constraint as the user scrolls
 * Mouse wheel handler:
@@ -52,7 +52,4 @@ Mouse Wheel Zoom:
   var options = {constrain: true, animate: false};
   map.zoomTo(center, map.getResolution() * scale, options);
   ```
-  ```
-
-Map API: