Untitled undefined type in Mermaid Config Schema

https://mermaid.js.org/schemas/config.schema.json#/$defs/C4DiagramConfig/properties/messageFontWeight

This sets the font weight of Message shape for the diagram

Abstract	Extensible	Status	Identifiable	Custom Properties	Additional Properties	Access Restrictions	Defined In
Can be instantiated	No	Unknown status	Unknown identifiability	Forbidden	Allowed	none	config.schema.json*

messageFontWeight Type

any of the following: string or number (Details)

messageFontWeight Default Value

The default value is:

"normal"