debian/copyright: fix upstream-name

Change-Id: Ia7b07524f9c3e6013992ee4ba5151d951b7d9eda
diff --git a/debian/copyright b/debian/copyright
index fdcf686..d6ebceb 100644
--- a/debian/copyright
+++ b/debian/copyright
@@ -1,5 +1,5 @@
 Format: http://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
-Upstream-Name: libosmocore
+Upstream-Name: libosmo-abis
 Source: git://git.osmocom.org/libosmo-abis.git
 
 Files: *