[glib] GApplication: Fix required # of elements in docs

[Daniel Boles <dboles src gnome org>]

commit b1b00517cf7a19911c4bc66697a26df6d03b41aa
Author: Daniel Boles <dboles src gnome org>
Date:   Wed Sep 6 21:44:25 2017 +0100

    GApplication: Fix required # of elements in docs
    
    The reality, as shown by our tests, is that only 2 elements are needed.

 gio/gapplication.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/gio/gapplication.c b/gio/gapplication.c
index 500fb78..0ee6ca6 100644
--- a/gio/gapplication.c
+++ b/gio/gapplication.c
@@ -1567,7 +1567,7 @@ g_application_class_init (GApplicationClass *class)
  *   "[A-Z][a-z][0-9]_-." and must not begin with a digit.
  *
  * - Application identifiers must contain at least one '.' (period)
- *   character (and thus at least three elements).
+ *   character (and thus at least two elements).
  *
  * - Application identifiers must not begin or end with a '.' (period)
  *   character.