通过json生成talk-card

支持2.6.5+

事例：

pie title Key elements in Product X "Calcium" : 42.96 "Potassium" : 50.05 "Magnesium" : 10.01 "Iron" : 5

graph TD; A-->B; A-->C; B-->D; C-->D;

写法：

{% mermaid %}
pie
    title Key elements in Product X
    "Calcium" : 42.96
    "Potassium" : 50.05
    "Magnesium" : 10.01
    "Iron" :  5
{% endmermaid %}

{% mermaid %}
graph TD;
    A-->B;
    A-->C;
    B-->D;
    C-->D;
{% endmermaid %}

mermaid

https://github.com/mermaid-js/mermaid