feature #14671 Document routing inline requirements and defaults for host (julienfalque)

This PR was merged into the 5.2 branch.

Discussion
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Document routing inline requirements and defaults for host

Relates to symfony/symfony#37696.

Commits
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8c21f36 Document routing inline requirements and defaults for host

Author: wouterj

routing.rst

@@ -790,6 +790,11 @@ concise, but it can decrease route readability when requirements are complex:
             // ...
         };
 
+.. versionadded:: 5.2
+
+    Since Symfony 5.2, inline parameter requirements are also supported in the
+    host. Before Symfony 5.2, they were supported in the path only.
+
 Optional Parameters
 ~~~~~~~~~~~~~~~~~~~
 
@@ -984,6 +989,11 @@ parameter:
     To give a ``null`` default value to any parameter, add nothing after the
     ``?`` character (e.g. ``/blog/{page?}``).
 
+.. versionadded:: 5.2
+
+    Since Symfony 5.2, inline parameter default values are also supported in
+    the host. Before Symfony 5.2, they were supported in the path only.
+
 Priority Parameter
 ~~~~~~~~~~~~~~~~~~