Add testcase and changelog entry for #5278
diff --git a/user_guide_src/source/changelog.rst b/user_guide_src/source/changelog.rst
index 2dd77e3..1c71b09 100644
--- a/user_guide_src/source/changelog.rst
+++ b/user_guide_src/source/changelog.rst
@@ -12,6 +12,7 @@
- Fixed a regression (#5276) - :doc:`Database Utilities <database/utilities>` method ``backup()`` generated incorrect ``INSERT`` statements with the 'mysqli' driver.
- Fixed a regression where :doc:`Database Results <database/results>` method ``field_data()`` returned incorrect type names.
+- Fixed a bug (#5278) - :doc:`URL Helper <helpers/url_helper>` function :php:func:`auto_link()` didn't detect trailing slashes in URLs.
Version 3.1.6
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