Arrows are too short in timeline

[Adam-Antios]

Description

If you have a lot of stacked fields in a timeline then the arrows get too short.

Steps to reproduce

Run the sample code or create a timeline with a lot of stacked fields.

Screenshots

Code Sample

---
config:
    theme: base
    themeVariables:
        fontFamily: Fira Sans
        fontSize: 17px
        cScale0: '#b3cde0'
        cScale1: '#f49090'
        cScale2: '#85d5b8'
---

timeline
    title Medical Device Lifecycle
    section Planning
        Quality Management System (4): Regulatory Compliance (4.1.1)
            : Risk Management (4.1.2)
        Management Resposibility (5): Planning Activities (5.4)
            : Management Reviews (5.6)
         Resource Management (6): Human Resources (6.2)
            : Infrastructure (6.3)
    section Realization
        Research and Development (7.3): RnD Planning (7.3.2)
            : Inputs (7.3.3)
            : Outputs (7.3.4)
            : Review (7.3.5)
            : Verification (7.3.6)
            : Validation (7.3.7)
        Purchasing (7.4): Purchasing Process (7.4.1)
            : Purchasing Information (7.4.2)
        Production (7.5): Production Activities (7.5.1)
            : Production Feedback (8.2.1)
        Installation (7.5.3): Installation Activities (7.5.3)
        Servicing (7.5.4): Servicing Activities (7.5.4)
    section Post-Production
        Post-Market Activities (8): Feedback (8.2.1)
            : Complaints (8.2.2)
            : Adverse Events (8.2.3)

Setup

No response

Suggested Solutions

No response

Additional Context

No response