[gtk-doc] gtkdoc-mkdb: finetune --ignore-files docs more

[Stefan Kost <stefkost src gnome org>]

commit 1f071b03984800375a3bfe70b41ab6d0f68488a7
Author: Stefan Sauer <ensonic users sf net>
Date:   Mon Dec 29 12:08:23 2014 +0100

    gtkdoc-mkdb: finetune --ignore-files docs more
    
    Reuse the doc string from gtkdoc-scan.

 gtkdoc-mkdb.in |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)
---
diff --git a/gtkdoc-mkdb.in b/gtkdoc-mkdb.in
index 74b87b2..f6e1eb9 100755
--- a/gtkdoc-mkdb.in
+++ b/gtkdoc-mkdb.in
@@ -100,7 +100,8 @@ gtkdoc-mkdb version @VERSION@ - generate docbook files
 --module=MODULE_NAME       Name of the doc module being parsed
 --source-dir=DIRNAME       Directories which contain inline reference material
 --source-suffixes=SUFFIXES Suffixes of source files to scan, comma-separated
---ignore-files=FILES       Files or directories which should not be scanned
+--ignore-files=FILES       A space-separated list of header files/dirs not to
+                           scan
 --output-dir=DIRNAME       Directory to put the generated DocBook files in
 --tmpl-dir=DIRNAME         Directory in which template files may be found
 --main-sgml-file=FILE      File containing the toplevel DocBook file.