fix dataset operator (#6064)

Co-authored-by: JzoNg <jzongcode@gmail.com>

web/i18n/en-US/common.ts

@@ -181,6 +181,8 @@ const translation = {
     builderTip: 'Can build & edit own apps',
     editor: 'Editor',
     editorTip: 'Can build & edit apps',
+    datasetOperator: 'Knowledge Admin',
+    datasetOperatorTip: 'Only can manage the knowledge base',
     inviteTeamMember: 'Add team member',
     inviteTeamMemberTip: 'They can access your team data directly after signing in.',
     email: 'Email',