Fix missing back_populates in Note.item relationship in example code (#12925)

Without back_populates, the subsequent code would not automatically populate Item.notes or generate the key, which contradicts what the documentation intends to demonstrate.

diff --git a/doc/build/orm/collection_api.rst b/doc/build/orm/collection_api.rst
index d1fbe8c00b0546d793351d8eaa64df8d7005b94a..a04160edee2671c4d278689de35be0f1deb2c2e9 100644 (file)
--- a/doc/build/orm/collection_api.rst
+++ b/doc/build/orm/collection_api.rst
@@ -220,7 +220,7 @@ of the ``Note.text`` field::
         keyword: Mapped[str]
         text: Mapped[str]
 
-        item: Mapped["Item"] = relationship()
+        item: Mapped["Item"] = relationship(back_populates="notes")
 
         @property
         def note_key(self):