docs: Fix typo on "occured" to "occurred" (#1212)

Author: hiro0218

packages/docs/src/zh-cn/guide/components/query.md

@@ -35,7 +35,7 @@
   <div v-if="loading" class="loading apollo">Loading...</div>
 
   <!-- Error -->
-  <div v-else-if="error" class="error apollo">An error occured</div>
+  <div v-else-if="error" class="error apollo">An error occurred</div>
 
   <!-- Result -->
   <div v-else-if="data" class="result apollo">{{ data.hello }}</div>
@@ -75,7 +75,7 @@ export default {
         <div v-if="loading" class="loading apollo">Loading...</div>
 
         <!-- Error -->
-        <div v-else-if="error" class="error apollo">An error occured</div>
+        <div v-else-if="error" class="error apollo">An error occurred</div>
 
         <!-- Result -->
         <div v-else-if="data" class="result apollo">{{ data.hello }}</div>
@@ -156,7 +156,7 @@ module.exports = {
       <div v-if="loading" class="loading apollo">Loading...</div>
 
       <!-- Error -->
-      <div v-else-if="error" class="error apollo">An error occured</div>
+      <div v-else-if="error" class="error apollo">An error occurred</div>
 
       <!-- Result -->
       <div v-else-if="data" class="result apollo">{{ data.hello }}</div>