[gimp] plug-ins: it's "darktable" not "placeholder"...

[Michael Natterer <mitch src gnome org>]

commit 4da47e2596e797c70696ba5f59e43aad32e3439d
Author: Michael Natterer <mitch gimp org>
Date:   Sat Sep 7 19:57:40 2019 +0200

    plug-ins: it's "darktable" not "placeholder"...
    
    seems i did a bit too much search/replace when porting file-raw.

 plug-ins/file-raw/file-raw-placeholder.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/plug-ins/file-raw/file-raw-placeholder.c b/plug-ins/file-raw/file-raw-placeholder.c
index 257bbad2f5..0a893289ac 100644
--- a/plug-ins/file-raw/file-raw-placeholder.c
+++ b/plug-ins/file-raw/file-raw-placeholder.c
@@ -172,7 +172,7 @@ placeholder_load (GimpProcedure        *procedure,
                _("There is no RAW loader installed to open '%s' files.\n"
                  "\n"
                  "GIMP currently supports these RAW loaders:\n"
-                 "- placeholder (http://www.placeholder.org/), at least 1.7\n"
+                 "- darktable (http://www.darktable.org/), at least 1.7\n"
                  "- RawTherapee (http://rawtherapee.com/), at least 5.2\n"
                  "\n"
                  "Please install one of them in order to "