Fix alignment of label for admin notes on admin

Signed-off-by: Takuya Noguchi <takninnovationresearch@gmail.com>

ee/app/views/admin/users/_admin_notes.html.haml

 %fieldset
   %legend= _('Admin notes')
   .form-group.row
+    .col-sm-2.text-right
       = f.label :note, _('AdminNote|Note'), class: 'col-form-label'
     .col-sm-10= f.text_area :note, class: 'form-control'

ee/changelogs/unreleased/11832-admin-notes-is-misaligned.yml

+---
+title: Fix alignment of label for admin notes on admin
+merge_request: 13592
+author: Takuya Noguchi
+type: fixed