[gtk-osx] Fix -- inside comment.

[John Ralls <jralls src gnome org>]

commit 57dfe5d433079abf8f363b888cc2477ab9361ace
Author: John Ralls <jralls ceridwen us>
Date:   Thu Jul 19 10:44:03 2018 -0700

    Fix -- inside comment.

 modulesets-unstable/gtk-osx.modules | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/modulesets-unstable/gtk-osx.modules b/modulesets-unstable/gtk-osx.modules
index b38b098..53865c2 100644
--- a/modulesets-unstable/gtk-osx.modules
+++ b/modulesets-unstable/gtk-osx.modules
@@ -89,7 +89,7 @@
     </after>
   </autotools>
 
-      <!-- c2man is required only for documentation. There used to be a --disable-docs flag but it was 
removed. This will of course fail, so shell in and do 'git revert 095d885' and then rerun configuration. -->
+      <!-- c2man is required only for documentation. There used to be a -\-disable-docs flag but it was 
removed. This will of course fail, so shell in and do 'git revert 095d885' and then rerun configuration. -->
   <autotools id="fribidi" autogenargs="--disable-docs">
     <branch module="fribidi/fribidi" repo="github"/>
     <dependencies>