miniProgram/subpages/helpDetails/helpDetails.wxml

<!--subpages/helpDetails/helpDetails.wxml-->
<view>
    <view class="card">
        <text class="title">{{mDetails.title}}</text>
        <view class="rich-content">
            <rich-text nodes="{{mDetails.content}}" user-select="{{true}}"></rich-text>
        </view>
    </view>
</view>