Typo.

bt5/erp5_discussion/PortalTypeWorkflowChainTemplateItem/workflow_chain_type.xml

 <workflow_chain>
  <chain>
   <type>Discussion Post</type>
-  <workflow>edit_workflow, embeddedt_workflow</workflow>
+  <workflow>edit_workflow, embedded_workflow</workflow>
  </chain>
  <chain>
   <type>Discussion Thread</type>

bt5/erp5_discussion/bt/revision

-100
+101
\ No newline at end of file

bt5/erp5_discussion/bt/template_portal_type_workflow_chain_list

 Discussion Post | edit_workflow
-Discussion Post | embeddedt_workflow
+Discussion Post | embedded_workflow
 Discussion Thread | document_conversion_interaction_workflow
 Discussion Thread | document_publication_workflow
 Discussion Thread | document_security_interaction_workflow