update doc

bqminh · bqminh · commit 6be9392ae1dc · 2025-04-03T17:11:51.000+11:00
diff --git a/doc/recipes/Simulating-concatenated-alignments-with-multiple-trees.md b/doc/recipes/Simulating-concatenated-alignments-with-multiple-trees.md
@@ -6,6 +6,11 @@ date:    2025-04-03
 docid: 100
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+
+There is now a much simpler way. Please read:
+
+[Topology-unlinked partition model](../doc/AliSim#topology-unlinked-partition-model)
+
 # Introduction
 
 This recipe explains how to simulate an alignment which comes from multiple
