chore: apply suggestions from code review

Co-authored-by: Zaiming (Stone) Shi <zmstone@gmail.com>

changes/v4.3.22-en.md

@@ -17,8 +17,7 @@
 
 - Enhanced log security in ACL modules, sensitive data will be obscured. [#9242](https://github.com/emqx/emqx/pull/9242).
 
-- Add `dashboard.bootstrap_users_file` configuration to bulk import default user&password when EMQX first starts [#9256](https://github.com/emqx/emqx/pull/9256).
-
+- Add `dashboard.bootstrap_users_file` configuration to bulk import default administrative username and password when EMQX initializes the database [#9256](https://github.com/emqx/emqx/pull/9256).
 
 
 ## Bug fixes

changes/v4.3.22-zh.md

@@ -17,7 +17,7 @@
 
 - 增强 ACL 模块中的日志安全性，敏感数据将被模糊化。[#9242](https://github.com/emqx/emqx/pull/9242)。
 
-- 增加 `dashboard.bootstrap_users_file` 配置，可以在EMQX第一次启动时批量导入默认的用户/密码 [#9256](https://github.com/emqx/emqx/pull/9256)。
+- 增加 `dashboard.bootstrap_users_file` 配置，可以让 EMQX 初始化数据库时，从该文件批量导入一些控制台用户的用户名 / 密码 [#9256](https://github.com/emqx/emqx/pull/9256)。
 
 
 ## 修复

lib-ce/emqx_dashboard/etc/emqx_dashboard.conf

@@ -18,8 +18,9 @@ dashboard.default_user.login = admin
 dashboard.default_user.password = public
 
 ## Initialize users file
-## Is used to add an administrative user to Dashboard when emqx is first launched,
-## the format is:
+## Is used to add administrative dashboard users when EMQX is launched for the first time.
+## This config will not take any effect once EMQX database is populated with the provided users.
+## The file content format is as below:
 ##  ```
 ##username1:password1
 ##username2:password2

lib-ce/emqx_dashboard/src/emqx_dashboard_admin.erl

@@ -23,7 +23,7 @@
 -include("emqx_dashboard.hrl").
 -include_lib("emqx/include/logger.hrl").
 -define(DEFAULT_PASSWORD, <<"public">>).
--define(BOOTSTRAP_USER_TAG, <<"bootstrap user">>).
+-define(BOOTSTRAP_USER_TAG, <<"bootstrapped">>).
 
 -boot_mnesia({mnesia, [boot]}).
 -copy_mnesia({mnesia, [copy]}).
@@ -242,7 +242,7 @@ add_bootstrap_user(File, Dev, MP, Line) ->
                     case add_user(Username, Password, ?BOOTSTRAP_USER_TAG) of
                         ok ->
                             add_bootstrap_user(File, Dev, MP, Line + 1);
-                        Reason ->
+                        {error, Reason} ->
                             throw(#{file => File, line => Line, content => Bin, reason => Reason})
                     end;
                 _ ->
@@ -254,7 +254,7 @@ add_bootstrap_user(File, Dev, MP, Line) ->
             end;
         eof ->
             ok;
-        Error ->
+        {error, Error} ->
             throw(#{file => File, line => Line, reason => Error})
     end.