minor #13204 precised output for absolute_url (benjR)

This PR was submitted for the 5.0 branch but it was merged into the 4.4 branch instead (closes #13204).

Discussion
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precised output for absolute_url

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Commits
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51068bb precised output for absolute_url

Author: javiereguiluz

reference/twig_reference.rst

@@ -237,7 +237,7 @@ absolute_url
 ``path``
     **type**: ``string``
 
-Returns the absolute URL from the passed relative path. Combine it with the
+Returns the absolute URL (with scheme and host) from the passed relative path. Combine it with the
 :ref:`asset() function <reference-twig-function-asset>` to generate absolute URLs
 for web assets. Read more about :ref:`Linking to CSS, JavaScript and Image Assets <templates-link-to-assets>`.