docs: 答案解释组件文档更新

src/components/answer-explanation/readme.md

-## 错题解释
+## 答案解释
 
 ## API
 
@@ -14,16 +14,14 @@
 ### 基础用法
 
 ```html
-<wrong-explanation answer="A" explain="无"></wrong-explanation>
+<answer-explanation answer="A" explain="无"></answer-explanation>
 ```
 
 ```javascript
-import wrongExplanation from '@/components/wrong-explanation/index.vue'
+import answerExplanation from '@/components/answer-explanation/index.vue'
 export default {
   components: {
-    answerSheet,
-  },
-  data() {},
-  methods: {},
+    answerExplanation,
+  }
 }
 ```

src/pages/index/index.vue

@@ -4,18 +4,11 @@
 		<view>
 			<text class="title">{{title}}</text>
 		</view>
-		<view style="margin-top: 200rpx; width: 100%;">
-			<answer-explanation answer="A" explain="无"></answer-explanation>
-		</view>
 	</view>
 </template>
 
 <script>
-	import answerExplanation from '@/components/answer-explanation/index.vue'
 	export default {
-		components: {
-			answerExplanation
-		},
 		data() {
 			return {
 				title: 'Hello'