line connection show arrow heads - but I dont want them to be shown

[idmake-github]

The code below shows arrow heads for

B1---E1
B1---D1
B1---A1

But I expect that none are shown. At least based on the documentation.

see https://jojozhuang.github.io/tutorial/mermaid-cheat-sheet/ section 1.3 Links between Nodes

flowchart TD
    A1((Idle<br>Motor=0))
    B1((Error))
    C1((Positionierung))
    D1((Work))
    E1((Done))

    A1-->C1
    C1-->B1
    C1--> |Start<br>Position=1| D1
    D1--> |Quittung| E1
    E1-->A1
    B1--> |Feheler behoben| A1
    D1-->B1

    B1---E1
    B1---D1
    B1---A1
 
    %% #00ff00 (Grün): Standard Ablauf
    linkStyle 0,2,3,4 stroke:#00ff00,stroke-width:1px;
    %% #0000ff (Blau): Fehler behoben
    linkStyle 5 stroke:#0000ff,stroke-width:1px;
    %% #ff0000 (rot): Fehler Behandlung
    linkStyle 1,6 stroke:#ff0000,stroke-width:1px;
    %% #ffffff (weiß): notwendig um Error in die Mitte zu bekommen
    linkStyle 7,8,9 stroke:#FFFFFF,stroke-width:1px;

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