新增 uni-countdown新增两个属性：showHour showMinute

docs/component/uniui/uni-countdown.md

@@ -41,6 +41,8 @@
 |minute				|Number	|0		|分钟				|
 |second				|Number	|0		|秒					|
 |showDay			|Boolean|true	|是否显示天数		|
+|showHour			|Boolean|true	|是否显示小时		|
+|showMinute			|Boolean|true	|是否显示分钟		|
 |showColon			|Boolean|true	|是否以冒号为分隔符	|
 |start				|Boolean|true	|是否初始化组件后就开始倒计时|
 
@@ -72,20 +74,20 @@
 ::: preview https://hellouniapp.dcloud.net.cn/pages/extUI/countdown/countdown
 > Template
 ```vue
-<template>
+<template>
 	<view class="container">
 		<uni-card is-full>
 			<text class="uni-h6">倒计时组件主要用于促销商品剩余时间，发送短信验证等待时间等场景</text>
-		</uni-card>
+		</uni-card>
 		 <uni-section title="一般用法" type="line" padding>
 			<uni-countdown :day="1" :hour="1" :minute="12" :second="40" />
-		</uni-section>
+		</uni-section>
 		<uni-section title="不显示天数" subTitle="设置 show-day = false 不显示天" type="line" padding>
 			<uni-countdown :show-day="false" :hour="12" :minute="12" :second="12" />
-		</uni-section>
+		</uni-section>
 		<uni-section title="文字分隔符" subTitle="设置 show-colon 属性设置分隔符样式" type="line" padding>
 			<uni-countdown :minute="30" :second="0" :show-colon="false" />
-		</uni-section>
+		</uni-section>
 		<uni-section title="修改颜色" subTitle="设置 color \ background 属性设置组件颜色" type="line" padding>
 			<uni-countdown :day="1" :hour="2" :minute="30" :second="0" color="#FFFFFF" background-color="#007AFF" />
 		</uni-section>
@@ -94,54 +96,54 @@
 		</uni-section>
 		<uni-section title="修改颜色 + 字体大小" type="line" padding>
 			<uni-countdown :font-size="30" :day="1" :hour="2" :minute="30" :second="0" color="#FFFFFF" background-color="#007AFF" />
-		</uni-section>
+		</uni-section>
 		<uni-section title="自由控制开始/暂停" subTitle="设置 start 属性控制是否自动开启" type="line" padding>
 			<uni-countdown :start="start" :day="1" :hour="1" :minute="12" :second="40" />
 		</uni-section>
 		<uni-section title="倒计时回调事件" type="line" padding>
 			<uni-countdown :show-day="false" :second="timeupSecond" @timeup="timeup" />
-		</uni-section>
+		</uni-section>
 		<uni-section title="动态赋值" type="line" padding>
 			<uni-countdown  :show-day="false" :hour="testHour" :minute="testMinute" :second="testSecond" />
-		</uni-section>
-	</view>
+		</uni-section>
+	</view>
 </template>
 ```
 > Script
-```vue
-<script>
-	export default {
-		components: {},
-		data() {
-			return {
-				testHour: 1,
-				testMinute: 0,
+```vue
+<script>
+	export default {
+		components: {},
+		data() {
+			return {
+				testHour: 1,
+				testMinute: 0,
 				testSecond: 0,
 				start: false,
-				timeupSecond: 10
-			}
-		},
-		mounted() {
+				timeupSecond: 10
+			}
+		},
+		mounted() {
 			setTimeout(() => {
-				this.testHour = 1
-				this.testMinute = 1
+				this.testHour = 1
+				this.testMinute = 1
 				this.testSecond = 0
-				this.start = true
+				this.start = true
 			}, 3000)
 			setTimeout(() => {
 				this.start = false
-			}, 10000)
-		},
-		methods: {
-			timeup() {
-				uni.showToast({
-					title: '时间到'
+			}, 10000)
+		},
+		methods: {
+			timeup() {
+				uni.showToast({
+					title: '时间到'
 				})
-				this.timeupSecond = 29
-			}
-		}
-	}
-</script>
+				this.timeupSecond = 29
+			}
+		}
+	}
+</script>
 
 ```
 :::