Diagram Image Missing in AVP TF Tree Doc
Description
The TF Tree flow diagram created for https://gitlab.com/autowarefoundation/autoware.auto/AutowareAuto/-/blob/master/src/tools/autoware_auto_avp_demo/design/avp-localization-design.md does not show up correctly when the documentation is generated for https://autowarefoundation.gitlab.io/autoware.auto/AutowareAuto/avp-localization-design.html.
How to Reproduce
Look at https://autowarefoundation.gitlab.io/autoware.auto/AutowareAuto/avp-localization-design.html.
Current Behavior
Diagram is missing.
Expected behavior
Diagram shows up.