Fix CHANGELOG [ci skip]

Author: rafaelfranca

CHANGELOG.md

@@ -3,7 +3,7 @@
 * Add explicit support for Rails 6 (no changes were needed)
 * Drop support to Ruby 1.9, 2.0, 2.1, and 2.3
 * Fix binstubs not being replaced when their quoting style was changed (#534)
-* Preserve comments right after the shebang line which might include magic comments such as `frozen_string_literal: true'
+* Preserve comments right after the shebang line which might include magic comments such as `frozen_string_literal: true`
 * Fix binstub failures when Bundler's `BUNDLE_APP_CONFIG` environment variable is present (#545)
 * Properly suspend and resume on ctrl-z TSTP and CONT (#361)