minor #5625 Tell about SYMFONY__TEMPLATING__HELPER__CODE__FILE_LINK_FORMAT (nicolas-grekas)

This PR was merged into the 2.3 branch.

Discussion
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Tell about SYMFONY__TEMPLATING__HELPER__CODE__FILE_LINK_FORMAT

| Q             | A
| ------------- | ---
| Doc fix?      | yes
| New docs?     | yes
| Applies to    | all
| Fixed tickets | -

Commits
-------

beef19e Tell about SYMFONY__TEMPLATING__HELPER__CODE__FILE_LINK_FORMAT

Author: xabbuh

reference/configuration/framework.rst

@@ -211,7 +211,7 @@ If you're using an IDE like TextMate or Mac Vim, then Symfony can turn all
 of the file paths in an exception message into a link, which will open that
 file in your IDE.
 
-Symfony contains preconfigured urls for some popular IDEs, you can set them
+Symfony contains preconfigured URLs for some popular IDEs, you can set them
 using the following keys:
 
 * ``textmate``
@@ -222,7 +222,7 @@ using the following keys:
 .. versionadded:: 2.3.14
     The ``emacs`` and ``sublime`` editors were introduced in Symfony 2.3.14.
 
-You can also specify a custom url string. If you do this, all percentage
+You can also specify a custom URL string. If you do this, all percentage
 signs (``%``) must be doubled to escape that character. For example, if
 you use PHPstorm on the Mac OS platform, you will do something like:
 
@@ -261,8 +261,11 @@ you use PHPstorm on the Mac OS platform, you will do something like:
 
 Of course, since every developer uses a different IDE, it's better to set
 this on a system level. This can be done by setting the ``xdebug.file_link_format``
-in the ``php.ini`` configuration to the url string. If this configuration
-value is set, then the ``ide`` option will be ignored.
+in the ``php.ini`` configuration to the URL string.
+
+If you don't use Xdebug, another way is to set this URL string in the
+``SYMFONY__TEMPLATING__HELPER__CODE__FILE_LINK_FORMAT`` environment variable.
+If any of these configurations values are set, the ``ide`` option will be ignored.
 
 .. _reference-framework-test: