runtime(doc): update helptags

Signed-off-by: Christian Brabandt <cb@256bit.org>

Author: chrisbra

runtime/doc/tags

@@ -7384,6 +7384,7 @@ ft-neomuttlog-syntax	syntax.txt	/*ft-neomuttlog-syntax*
 ft-neomuttrc-syntax	syntax.txt	/*ft-neomuttrc-syntax*
 ft-nroff-syntax	syntax.txt	/*ft-nroff-syntax*
 ft-ocaml-syntax	syntax.txt	/*ft-ocaml-syntax*
+ft-org-plugin	filetype.txt	/*ft-org-plugin*
 ft-pandoc-syntax	syntax.txt	/*ft-pandoc-syntax*
 ft-papp-syntax	syntax.txt	/*ft-papp-syntax*
 ft-pascal-syntax	syntax.txt	/*ft-pascal-syntax*