Fixed build errors

Author: wouterj

components/lock.rst

@@ -169,7 +169,7 @@ object) and ``isExpired()`` (which returns a boolean).
 The Owner of The Lock
 ---------------------
 
-Locks that are acquired for the first time are owned by the ``Lock`` instance that acquired
+Locks that are acquired for the first time are owned [1]_ by the ``Lock`` instance that acquired
 it. If you need to check whether the current ``Lock`` instance is (still) the owner of
 a lock, you can use the ``isAcquired()`` method::
 
@@ -206,6 +206,11 @@ above), it is possible for an instance to lose the lock it acquired automaticall
     you have to use ``acquire()`` for this. The ``isAcquired()`` method is used to check
     if the lock has been acquired by the **current process** only!
 
+.. [1] Technically, the true owners of the lock are the ones that share the same instance of ``Key``,
+    not ``Lock``. But from a user perspective, ``Key`` is internal and you will likely only be working
+    with the ``Lock`` instance so it's easier to think of the ``Lock`` instance as being the one that
+    is the owner of the lock.
+
 Available Stores
 ----------------
 

form/form_customization.rst

@@ -341,7 +341,7 @@ array).
 
 .. code-block:: html+twig
 
-    <option {% if choice is selectedchoice(value) %}selected="selected"{% endif %} ...>
+    <option {% if choice is selectedchoice(value) %}selected="selected"{% endif %}>
 
 .. _form-twig-rootform:
 

messenger.rst

@@ -910,7 +910,7 @@ up manually by calling the ``messenger:setup-transports`` command.
         .. code-block:: xml
 
             # config/packages/doctrine.xml
-            <doctrine:dbal schema-filter="~^(?!messenger_messages)~" .../>
+            <doctrine:dbal schema-filter="~^(?!messenger_messages)~"/>
 
         .. code-block:: php
 

session/database.rst

@@ -546,7 +546,7 @@ configure these values with the second argument passed to the
             Symfony\Component\HttpFoundation\Session\Storage\Handler\MongoDbSessionHandler:
                 arguments:
                     - '@doctrine_mongodb.odm.default_connection'
-                    - { id_field: '_guid', `expiry_field`: `eol` }
+                    - { id_field: '_guid', 'expiry_field': 'eol' }
 
     .. code-block:: xml