minor #6147 Update templating.rst - Asset absolute url fix (gbalcewicz)

This PR was submitted for the 3.0 branch but it was merged into the 2.7 branch instead (closes #6147).

Discussion
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Update templating.rst - Asset absolute url fix

| Q             | A
| ------------- | ---
| Doc fix?      | yes
| New docs?     | no
| Applies to    | 3.0+
| Fixed tickets | N/A

Fixed the description of using absolute_url for the asset.

Commits
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bf5de47 Update templating.rst

Author: xabbuh

book/templating.rst

@@ -1091,7 +1091,7 @@ If you don't give a version or pass ``null``, the default package version
 (from :ref:`ref-framework-assets-version`) will be used. If you pass ``false``,
 versioned URL will be deactivated for this asset.
 
-If you need absolute URLs for assets, you can set the ``absolute`` argument
+If you need absolute URLs for assets, you can use the ``absolute_url`` function
 if you are using Twig (or the third argument if you are using PHP) to ``true``:
 
 .. configuration-block::