Fix haml-lint Rubocop Style/StringLiterals cop (#25948)

.haml-lint_todo.yml

@@ -1,13 +1,13 @@
 # This configuration was generated by
 # `haml-lint --auto-gen-config`
-# on 2023-07-17 09:15:24 -0400 using Haml-Lint version 0.48.0.
+# on 2023-07-17 09:59:21 -0400 using Haml-Lint version 0.48.0.
 # The point is for the user to remove these configuration records
 # one by one as the lints are removed from the code base.
 # Note that changes in the inspected code, or installation of new
 # versions of Haml-Lint, may require this file to be generated again.
 
 linters:
-  # Offense count: 70
+  # Offense count: 69
   RuboCop:
     enabled: false
 

app/views/settings/imports/show.html.haml

@@ -2,7 +2,7 @@
   = t("imports.titles.#{@bulk_import.type}")
 
 - if @bulk_import.likely_mismatched?
-  .flash-message.warning= t("imports.mismatched_types_warning")
+  .flash-message.warning= t('imports.mismatched_types_warning')
 
 - if @bulk_import.overwrite?
   %p.hint= t("imports.overwrite_preambles.#{@bulk_import.type}_html", filename: @bulk_import.original_filename, total_items: @bulk_import.total_items)