Merge branch '5.2' into 5.3

* 5.2:
  Typo with backslashes
  [Lock] Remove note about sharing the key

Author: javiereguiluz

components/lock.rst

@@ -618,12 +618,7 @@ Remote stores (:ref:`MemcachedStore <lock-store-memcached>`,
 :ref:`ZookeeperStore <lock-store-zookeeper>`) use a unique token to recognize
 the true owner of the lock. This token is stored in the
 :class:`Symfony\\Component\\Lock\\Key` object and is used internally by
-the ``Lock``, therefore this key must not be shared between processes (session,
-caching, fork, ...).
-
-.. caution::
-
-    Do not share a key between processes.
+the ``Lock``.
 
 Every concurrent process must store the ``Lock`` in the same server. Otherwise two
 different machines may allow two different processes to acquire the same ``Lock``.

service_container.rst

@@ -397,7 +397,7 @@ example, suppose you want to make the admin email configurable:
 
 If you make this change and refresh, you'll see an error:
 
-    Cannot autowire service "App\Service\SiteUpdateManager": argument "$adminEmail"
+    Cannot autowire service "App\\Service\\SiteUpdateManager": argument "$adminEmail"
     of method "__construct()" must have a type-hint or be given a value explicitly.
 
 That makes sense! There is no way that the container knows what value you want to