Update citedin in frontmatter .md files

Author: actions-user

_pathways/WP1763.md

@@ -32,6 +32,9 @@ citedin:
     by conventional plasmids and minicircles (2014)
 - link: PMC3885437
   title: A provisional gene regulatory atlas for mouse heart development (2014)
+- link: PMC12849698
+  title: Differential Hes1 activation defines neural stem cell lineage commitment
+    and niche maintenance in embryonic and adult mouse cortex (2026)
 description: 'The aim of the PluriNetWork is to give an overview of specific mechanisms
   associated with pluripotency in mouse. Each node represents a gene and its corresponding
   protein product. As stated, we intentionally focused on information flow, neglecting