Update tutorials/model_editor.md

Co-authored-by: Mabel Zhang <mabel@openrobotics.org>
Signed-off-by: Nate Koenig <natekoenig@gmail.com>

Author: nkoenig

tutorials/model_editor.md

@@ -47,7 +47,7 @@ the Entity Tree, then click the + button on the Component Inspector Editor
 plugin. In the example below, we are adding an entity to the selected box
 entity.
 
-@image html files/model_editor/add_link.png "Add Link" width=60%
+@image html files/model_editor/add_link.png "Add Link"
 
 A menu displaying different types of links, joints, and lights will appear.
 Select the desired entity type to add to the model. The new entity will