[gnome-builder] Fix AS_HELP_STRING for quick-highlight plugin

[Sébastien Lafargue <slafargue src gnome org>]

commit cba37e9ca1b8d37c88d48f3eb44e258f1d821110
Author: Michael Biebl <biebl debian org>
Date:   Thu Dec 22 14:41:47 2016 +0100

    Fix AS_HELP_STRING for quick-highlight plugin
    
    https://bugzilla.gnome.org/show_bug.cgi?id=776386

 plugins/quick-highlight/configure.ac |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/plugins/quick-highlight/configure.ac b/plugins/quick-highlight/configure.ac
index 16e11d7..6d6f784 100644
--- a/plugins/quick-highlight/configure.ac
+++ b/plugins/quick-highlight/configure.ac
@@ -1,6 +1,6 @@
-# --enable-quick-highlight=yes/no
+# --enable-quick-highlight-plugin=yes/no
 AC_ARG_ENABLE([quick-highlight-plugin],
-              [AS_HELP_STRING([--enable-quick-highlight=@<:@yes/no@:>@],
+              [AS_HELP_STRING([--enable-quick-highlight-plugin=@<:@yes/no@:>@],
                               [Build with support for quick symbol highlight.])],
               [enable_quick_highlight_plugin=$enableval],
               [enable_quick_highlight_plugin=yes])