[pitivi] build: Fix gst-transcoder git URL

[Thibault Saunier <tsaunier src gnome org>]

commit d77561578040e03dc7db245ec0c0245850dab7bf
Author: Thibault Saunier <tsaunier gnome org>
Date:   Fri Jul 15 10:53:39 2016 -0400

    build: Fix gst-transcoder git URL
    
    Previous work too though

 subprojects/gst-transcoder.wrap |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/subprojects/gst-transcoder.wrap b/subprojects/gst-transcoder.wrap
index e2e326b..b1745c8 100644
--- a/subprojects/gst-transcoder.wrap
+++ b/subprojects/gst-transcoder.wrap
@@ -1,4 +1,4 @@
 [wrap-git]
 directory=gst-transcoder
-url=https://github.com/pitivi/gst-transcoder
+url=https://github.com/pitivi/gst-transcoder.git
 revision=1.8.1