correct api note formatting

ianhi · QuLogic · web-flow · commit ce8d715c5962 · 2020-08-04T20:18:54.000-04:00
Co-authored-by: Elliott Sales de Andrade &lt;quantum.analyst@gmail.com&gt;
diff --git a/doc/api/next_api_changes/behavior/18172-IHI.rst b/doc/api/next_api_changes/behavior/18172-IHI.rst
@@ -1,6 +1,6 @@
 webAgg backend no longer reports a middle click as a right click
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
 Previously when using the webAgg backend the event passed to a callback
-by `fig.canvas.mpl_connect('mouse_button_event', callback)` on a middle click
-would report `MouseButton.RIGHT` instead of `MouseButton.MIDDLE`
+by ``fig.canvas.mpl_connect('mouse_button_event', callback)`` on a middle click
+would report `.MouseButton.RIGHT` instead of `.MouseButton.MIDDLE`
