Fix association mapping docs (closes #11797)

Author: rixafy

docs/en/reference/association-mapping.rst

@@ -901,9 +901,11 @@ join columns default to the simple, unqualified class name of the
 targeted class followed by "\_id". The referencedColumnName always
 defaults to "id", just as in one-to-one or many-to-one mappings.
 
-Additionally, when using typed properties with Doctrine 2.9 or newer
+Additionally, when using typed properties with ORM 2.9 or newer
 you can skip ``targetEntity`` in ``ManyToOne`` and ``OneToOne``
-associations as they will be set based on type. So that:
+associations as they will be set based on type. Also with ORM 3.4
+or newer, ``nullable`` attribute on ``JoinColumn`` will be inherited
+from PHP type. So that:
 
 .. configuration-block::
 
@@ -930,7 +932,7 @@ Is essentially the same as following:
         <?php
         /** One Product has One Shipment. */
         #[OneToOne(targetEntity: Shipment::class)]
-        #[JoinColumn(name: 'shipment_id', referencedColumnName: 'id')]
+        #[JoinColumn(name: 'shipment_id', referencedColumnName: 'id', nullable: false)]
         private Shipment $shipment;
 
     .. code-block:: annotation
@@ -939,7 +941,7 @@ Is essentially the same as following:
         /**
          * One Product has One Shipment.
          * @OneToOne(targetEntity="Shipment")
-         * @JoinColumn(name="shipment_id", referencedColumnName="id")
+         * @JoinColumn(name="shipment_id", referencedColumnName="id", nullable=false)
          */
         private Shipment $shipment;
 
@@ -948,7 +950,7 @@ Is essentially the same as following:
         <doctrine-mapping>
             <entity class="Product">
                 <one-to-one field="shipment" target-entity="Shipment">
-                    <join-column name="shipment_id" referenced-column-name="id" nulable=false />
+                    <join-column name="shipment_id" referenced-column-name="id" nullable=false />
                 </one-to-one>
             </entity>
         </doctrine-mapping>