Markdown for odoc without system

src/dune_rules/alias0.ml

@@ -20,6 +20,7 @@ let lint = standard "lint"
 let private_doc = standard "doc-private"
 let doc = standard "doc"
 let doc_json = standard "doc-json"
+let doc_markdown = standard "doc-markdown"
 let doc_new = standard "doc-new"
 let check = standard "check"
 let install = standard "install"

src/dune_rules/alias0.mli

@@ -7,6 +7,7 @@ module Name := Dune_engine.Alias.Name
 val fmt : Name.t
 val doc : Name.t
 val doc_json : Name.t
+val doc_markdown : Name.t
 val lint : Name.t
 val private_doc : Name.t
 val doc_new : Name.t