fix: 解决 uni.showModal 内容无法自动换行的问题

src/platforms/h5/components/app/popup/modal.vue

@@ -113,7 +113,7 @@ export default {
 		font-size: 18px;
 		word-wrap:break-word;
 		word-break:break-all;
-		white-space: pre;
+		white-space: pre-wrap;
 		overflow : hidden;
 		text-overflow: ellipsis;
 		display: -webkit-box;
@@ -128,7 +128,7 @@ export default {
 		line-height: 1.4;
 		word-wrap: break-word;
 		word-break: break-all;
-		white-space: pre;
+		white-space: pre-wrap;
 		color: #999999;
 		max-height: 400px;
 		overflow-y: auto;