Description

I don't have any description to relationship and I have never used tools that relationship label is needed (such as A5SQL).
So I would like to know:

1. Why the parameter is required in Mermaid
2. What can you write when these are not needed or doesn't have any appropriate description
3. Can it be optional?

Steps to reproduce

See code sample.

Screenshots

Code Sample

erDiagram
    TableA }o--|| tableB

Setup

• Mermaid version:
• Browser and Version: [Chrome, Edge, Firefox]

Suggested Solutions

relationship-label should be optional.

Additional Context

No response