Documentation fix for markup keywords.

[David Kastrup]

This just brings the docs a bit more in line with reality.

diff --git a/scm/markup.scm b/scm/markup.scm
index 4c050ba..b82d50e 100644
--- a/scm/markup.scm
+++ b/scm/markup.scm
@@ -375,12 +375,12 @@ Use `markup*' in a \\notemode context."
 ;;; (markup-command-signature raise-markup)
 ;;; ==> (#<primitive-procedure number?> #<procedure markup? (obj)>)
 ;;;
-;;; (markup-command-keyword raise-markup) ==> "scheme0-markup1"
+;;; (markup-command-keyword raise-markup) ==> scheme0-markup1
 ;;; 
 
 (define-public (markup-command-keyword markup-command)
-  "Return markup-command's argument keyword, ie a string describing the command
-  arguments, eg. \"scheme0markup1\""
+  "Return markup-command's argument keyword, ie a symbol describing the command
+  arguments, eg. scheme0-markup1"
   (object-property markup-command 'markup-keyword))
 
 (define-public (markup-command-signature-ref markup-command)


-- 
David Kastrup