导出pdf文案调整

src/components/modals/PdfExportModal.vue

@@ -1,7 +1,7 @@
 <template>
   <modal-inner aria-label="导出到PDF">
     <div class="modal__content">
-      <p>请为您的<b> pdf导出</b>选择模板。</p>
+      <p>请为您的<b> pdf导出</b>选择模板。(该导出很消耗服务器资源,文档太大或图片太多可能会导出超时失败,限时开放使用!)</p>
       <form-entry label="模板">
         <select class="textfield" slot="field" v-model="selectedTemplate" @keydown.enter="resolve()">
           <option v-for="(template, id) in allTemplatesById" :key="id" :value="id">

src/styles/base.scss

@@ -302,11 +302,6 @@ img {
 }
 
 .stackedit--pdf {
-  blockquote {
-    // wkhtmltopdf doesn't like borders with transparency
-    border-left-color: #ececec;
-  }
-
   .stackedit__html {
     padding-left: 0;
     padding-right: 0;