Fix the issues reported by phpcs

Problem/Motivation

administrator@admin:/var/www/html/my-drupal10-site$ vendor/bin/phpcs --standard=Drupal,DrupalPractice --extensions=php,module,inc,install,test,profile,theme,css,info,txt,md,yml /var/www/html/my-drupal10-site/web/modules/contrib/find_external_links/
FILE: /var/www/html/my-drupal10-site/web/modules/contrib/find_external_links/src/Controller/FindExternalLinksController.php
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FOUND 1 ERROR AFFECTING 1 LINE
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8 | ERROR | [x] Use statements should be sorted alphabetically. The first wrong one is Drupal\Component\Render\FormattableMarkup.
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PHPCBF CAN FIX THE 1 MARKED SNIFF VIOLATIONS AUTOMATICALLY
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FILE: /var/www/html/my-drupal10-site/web/modules/contrib/find_external_links/src/Form/ConfigurationForm.php
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FOUND 1 ERROR AND 1 WARNING AFFECTING 2 LINES
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7 | ERROR | [x] Use statements should be sorted alphabetically. The first wrong one is Drupal\Core\Database\Connection.
219 | WARNING | [ ] \Drupal calls should be avoided in classes, use dependency injection instead
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PHPCBF CAN FIX THE 1 MARKED SNIFF VIOLATIONS AUTOMATICALLY
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Steps to reproduce

vendor/bin/phpcs --standard=Drupal,DrupalPractice --extensions=php,module,inc,install,test,profile,theme,css,info,txt,md,yml /var/www/html/my-drupal10-site/web/modules/contrib/find_external_links/

Proposed resolution

Run this command

vendor/bin/phpcbf --standard=Drupal,DrupalPractice --extensions=php,module,inc,install,test,profile,theme,css,info,txt,md,yml /var/www/html/my-drupal10-site/web/modules/contrib/find_external_links/

Remaining tasks

User interface changes

API changes

Data model changes