[ci skip] Fix typo for `required` attribute

app/views/shared/_field.html.haml

@@ -23,6 +23,6 @@
     - elsif type == 'select'
       = form.select name, options_for_select(choices, value ? value : default_choice), {}, { class: "form-control" }
     - elsif type == 'password'
-      = form.password_field name, autocomplete: "new-password", class: "form-control", required: value.blank? && :required
+      = form.password_field name, autocomplete: "new-password", class: "form-control", required: value.blank? && required
     - if help
       %span.help-block= help