[ISSUE #2196] code style(acl): correct spell mistake, remove redundant code (#2197)

* code style(acl): correct spell mistake, remove redundant code
* refine
Co-authored-by: Nzhangxu16 <zhangxu16@xiaomi.com>

acl/src/main/java/org/apache/rocketmq/acl/common/Permission.java

@@ -65,7 +65,6 @@ public class Permission {
             case "SUB":
                 return Permission.SUB;
             case "PUB|SUB":
-                return Permission.PUB | Permission.SUB;
             case "SUB|PUB":
                 return Permission.PUB | Permission.SUB;
             case "DENY":

acl/src/main/java/org/apache/rocketmq/acl/plain/PlainPermissionManager.java

@@ -164,14 +164,13 @@ public class PlainPermissionManager {
         return false;
     }
 
-    private Map<String, Object> createAclAccessConfigMap(Map<String, Object> existedAccoutMap, PlainAccessConfig plainAccessConfig) {
-
+    private Map<String, Object> createAclAccessConfigMap(Map<String, Object> existedAccountMap, PlainAccessConfig plainAccessConfig) {
         
         Map<String, Object> newAccountsMap = null;
-        if (existedAccoutMap == null) {
+        if (existedAccountMap == null) {
             newAccountsMap = new LinkedHashMap<String, Object>();
         } else {
-            newAccountsMap = existedAccoutMap;
+            newAccountsMap = existedAccountMap;
         }
 
         if (StringUtils.isEmpty(plainAccessConfig.getAccessKey()) ||