style(goodsDetail): update link color for contract attachment in order tracking details

src/views/OrderTrack/goodsDetail.vue

@@ -41,7 +41,7 @@
           <el-table-column prop="contractSn" label="合同编号" min-width="225" :show-overflow-tooltip="true"></el-table-column>
           <el-table-column label="合同附件" width="100" align="center">
             <template slot-scope="scope">
-              <el-link v-if="scope.row.contractFileUrl != ''" :href="scope.row.contractFileUrl + '?fileType=pdf'" target="_blank" style="font-size:12px;">查看</el-link>
+              <el-link v-if="scope.row.contractFileUrl != ''" :href="scope.row.contractFileUrl + '?fileType=pdf'" target="_blank" style="font-size:12px;color:#409eff;">查看</el-link>
             </template>
           </el-table-column>
           <el-table-column prop="contractBuildTime" label="生成时间" width="160"></el-table-column>