chore: fix typo (close: #960)(#964)

Author: stranger26

packages/docs/docs/.vuepress/config.js

@@ -79,10 +79,10 @@ module.exports = ctx => ({
   clientRootMixin: path.resolve(__dirname, 'mixin.js')
 })
 
-function getGuideSidebar (gruopA, groupB) {
+function getGuideSidebar (groupA, groupB) {
   return [
     {
-      title: gruopA,
+      title: groupA,
       collapsable: false,
       children: [
         '',
@@ -107,10 +107,10 @@ function getGuideSidebar (gruopA, groupB) {
   ]
 }
 
-function getPluginSidebar (gruopA, introductionA) {
+function getPluginSidebar (groupA, introductionA) {
   return [
     {
-      title: gruopA,
+      title: groupA,
       collapsable: false,
       children: [
         ['', introductionA],
@@ -125,10 +125,10 @@ function getPluginSidebar (gruopA, introductionA) {
   ]
 }
 
-function getThemeSidebar (gruopA, introductionA) {
+function getThemeSidebar (groupA, introductionA) {
   return [
     {
-      title: gruopA,
+      title: groupA,
       collapsable: false,
       children: [
         ['', introductionA],