Issue #2600576 by droplet: MIME, not Mime / mime

core/lib/Drupal/Core/DrupalKernel.php

core/lib/Drupal/Core/File/MimeType/MimeTypeGuesser.php

core/modules/file/config/optional/views.view.files.yml

core/modules/file/file.module

...ile/src/Plugin/Field/FieldFormatter/FilemimeFormatter.php

core/modules/file/src/Plugin/migrate/source/d6/File.php

core/modules/file/src/Plugin/migrate/source/d7/File.php

core/modules/hal/src/Tests/FileDenormalizeTest.php