docs: documented get_children in Page model reference

Fixes #11499

CHANGELOG.txt

@@ -90,6 +90,7 @@ Changelog
  * Docs: Update contributing guide documentation and GitHub templates to better support new contributors (Thibaud Colas)
  * Docs: Update MyST documentation parser library to v 2.0.0 (Neeraj Yetheendran)
  * Docs: Add documentation writing guidelines for intersphinx / external links (LB (Ben) Johnston)
+ * Docs: Add `Page` model reference `get_children` documentation (Salvo Polizzi)
  * Maintenance: Update BeautifulSoup upper bound to 4.12.x (scott-8)
  * Maintenance: Migrate initialization of classes (such as `body.ready`) from multiple JavaScript implementations to one Stimulus controller `w-init` (Chiemezuo Akujobi)
  * Maintenance: Adopt the usage of of translate string literals using `arg=_('...')` in all `wagtailadmin` module templates (Chiemezuo Akujobi)

docs/reference/pages/model_reference.md

@@ -202,6 +202,8 @@ See also [django-treebeard](https://django-treebeard.readthedocs.io/en/latest/in
 
     .. automethod:: get_parent
 
+    .. automethod:: get_children
+
     .. automethod:: get_ancestors
 
     .. automethod:: get_descendants

docs/releases/6.0.md

@@ -128,6 +128,7 @@ Thank you to Thibaud Colas, Badr Fourane, and Sage Abdullah for their work on th
  * Add more CSS authoring guidelines (Thibaud Colas)
  * Update MyST documentation parser library to v 2.0.0 (Neeraj Yetheendran)
  * Add documentation writing guidelines for intersphinx / external links (LB (Ben) Johnston)
+ * Add `Page` model reference `get_children` documentation (Salvo Polizzi)
 
 ### Maintenance