fix：修复行销bug

src/views/billing/plan.vue

@@ -4,7 +4,7 @@
     <Progress :init="true" />
     <div v-for="(item, index) in PricingPlanList" :key="index" class="comb">
       <div><span>Pricing Plan: </span>{{ item.assetTypeShow }}</div>
-      <div v-if="item.assetTypeShow === 'Monthly'"><span>Up to: </span>{{ item.totalFiles }} Documents / Month</div>
+      <div v-if="item.assetTypeShow === 'Monthly' || item.assetTypeShow === 'Free'"><span>Up to: </span>{{ item.totalFiles }} Documents / Month</div>
       <div v-else-if="item.assetTypeShow === 'Annually'"><span>Up to: </span>{{ item.totalFiles }} Documents / Year</div>
       <div v-else><span>Up to: </span>{{ item.totalFiles }}</div>
       <div v-if="item.assetType !== 2"><span>Validity Period: </span>{{ item.startDate }} ~ {{item.endDate}}</div>