Merge pull request #3016 from gagbo/patch-1

Add a few missing modes to `hdm` alist

core/autoload/help.el

@@ -38,6 +38,7 @@
     (LaTeX-mode      :lang latex)
     (ledger-mode     :lang ledger)
     (lua-mode        :lang lua)
+    (moonscript-mode :lang lua)
     (markdown-mode   :lang markdown)
     (gfm-mode        :lang markdown)
     (nim-mode        :lang nim)
@@ -45,6 +46,7 @@
     (taureg-mode     :lang ocaml)
     (org-mode        :lang org)
     (perl-mode       :lang perl)
+    (raku-mode       :lang perl)
     (php-mode        :lang php)
     (hack-mode       :lang php)
     (plantuml-mode   :lang plantuml)
@@ -53,7 +55,9 @@
     (restclient-mode :lang rest)
     (ruby-mode       :lang ruby)
     (rust-mode       :lang rust)
+    (rustic-mode     :lang rust)
     (scala-mode      :lang scala)
+    (scheme-mode     :lang scheme)
     (sh-mode         :lang sh)
     (swift-mode      :lang swift)
     (web-mode        :lang web)