[gnome-online-accounts] build: Fix help string

[Debarshi Ray <debarshir src gnome org>]

commit 152606cb7a38d3ed7b033e01729e4b64bb8d8d50
Author: Debarshi Ray <debarshir gnome org>
Date:   Wed Jul 18 17:39:27 2018 +0200

    build: Fix help string
    
    The --enable-documentation option is only about the goa-daemon(8) man
    page, and nothing else. The gtk-doc HTML pages are controlled by the
    --enable-gtk-doc option.

 configure.ac | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/configure.ac b/configure.ac
index 456ab67a..32581afd 100644
--- a/configure.ac
+++ b/configure.ac
@@ -73,7 +73,7 @@ AX_REQUIRE_DEFINED([GLIB_GSETTINGS])
 GLIB_GSETTINGS
 
 AC_ARG_ENABLE([documentation],
-       AS_HELP_STRING([--enable-documentation], [enable man pages and HTML]),
+       AS_HELP_STRING([--enable-documentation], [enable man pages]),
        [], [enable_documentation=yes])
 AM_CONDITIONAL(ENABLE_DOCUMENTATION, test x$enable_documentation = xyes)
 if test x$enable_documentation = xyes; then