#27345 removed support for mongodb <2.2

Author: Joe Bennett

components/lock.rst

@@ -276,7 +276,7 @@ MongoDbStore
 
     The ``MongoDbStore`` was introduced in Symfony 4.4.
 
-The MongoDbStore saves locks on a MongoDB server, it requires a
+The MongoDbStore saves locks on a MongoDB server ``^2.2``, it requires a
 ``\MongoDB\Client`` connection from `mongodb/mongodb`_. This store does not
 support blocking and expects a TTL to avoid stalled locks::
 
@@ -589,7 +589,7 @@ MongoDbStore
     collection. Beware that in MongoDB an indexed field's value can be
     `a maximum of 1024 bytes in length`_ inclusive of structural overhead.
 
-A TTL index MUST BE used on MongoDB 2.2+ to automatically clean up expired locks.
+A TTL index MUST BE used to automatically clean up expired locks.
 Such an index can be created manually:
 
 .. code-block:: javascript
@@ -605,8 +605,8 @@ about `Expire Data from Collections by Setting TTL`_ in MongoDB.
 
 .. tip::
 
-    ``MongoDbStore`` will attempt to automatically create a TTL index on MongoDB
-    2.2+. It's recommended to set constructor option ``gcProbablity = 0.0`` to
+    ``MongoDbStore`` will attempt to automatically create a TTL index.
+    It's recommended to set constructor option ``gcProbablity = 0.0`` to
     disable this behavior if you have manually dealt with TTL index creation.
 
 .. caution::