[gimp] pdb: item.pdb: '3,0' is not a version, it's '3.0'

[Michael Natterer <mitch src gnome org>]

commit c8bf85cc54747bc685c2cf72f3194ba4a7261951
Author: Michael Natterer <mitch gimp org>
Date:   Sun Oct 27 18:56:53 2019 +0100

    pdb: item.pdb: '3,0' is not a version, it's '3.0'

 libgimp/gimpitem_pdb.c | 2 +-
 pdb/groups/item.pdb    | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/libgimp/gimpitem_pdb.c b/libgimp/gimpitem_pdb.c
index d7e720c2ae..5caefac553 100644
--- a/libgimp/gimpitem_pdb.c
+++ b/libgimp/gimpitem_pdb.c
@@ -263,7 +263,7 @@ gimp_item_id_is_layer_mask (gint item_id)
  *
  * Returns: TRUE if the item ID is a selection, FALSE otherwise.
  *
- * Since: 3,0
+ * Since: 3.0
  **/
 gboolean
 gimp_item_id_is_selection (gint item_id)
diff --git a/pdb/groups/item.pdb b/pdb/groups/item.pdb
index a5837818f5..f8f808961a 100644
--- a/pdb/groups/item.pdb
+++ b/pdb/groups/item.pdb
@@ -216,7 +216,7 @@ This procedure returns TRUE if the specified item ID is a selection.
 HELP
 
     &std_pdb_misc;
-    $since = '3,0';
+    $since = '3.0';
 
     @inargs = (
        { name => 'item_id', type => 'int32',