minor #16281 Correct spelling & grammar in 4.4 routing/ (gnito-org)

This PR was merged into the 4.4 branch.

Discussion
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Correct spelling & grammar in 4.4 routing/

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7566ba7 Correct spelling & grammar in 4.4 routing/

Author: javiereguiluz

routing/custom_route_loader.rst

@@ -82,7 +82,7 @@ Symfony provides several route loaders for the most common needs:
 
 .. note::
 
-    When importing resources, the key (e.g. ``app_file``) is the name of collection.
+    When importing resources, the key (e.g. ``app_file``) is the name of the collection.
     Just be sure that it's unique per file so no other lines override it.
 
 If your application needs are different, you can create your own custom route

routing/routing_from_database.rst

@@ -24,7 +24,7 @@ When all routes are known during deploy time and the number is not too
 high, using a :doc:`custom route loader <custom_route_loader>` is the
 preferred way to add more routes. When working with only one type of
 objects, a slug parameter on the object and the ``@ParamConverter``
-annotation work fine (see `FrameworkExtraBundle`_) .
+annotation works fine (see `FrameworkExtraBundle`_) .
 
 The ``DynamicRouter`` is useful when you need ``Route`` objects with
 the full feature set of Symfony. Each route can define a specific