misc: rename namespace jami to namespace dhtnet

Change-Id: I904ec8fa1f35dfdcf1aabd5f1ec8d95989ad0696
diff --git a/src/upnp/upnp_context.cpp b/src/upnp/upnp_context.cpp
index c4344cf..93af971 100644
--- a/src/upnp/upnp_context.cpp
+++ b/src/upnp/upnp_context.cpp
@@ -1343,4 +1343,4 @@
 #endif
 
 } // namespace upnp
-} // namespace jami
+} // namespace dhtnet