[unrelated] add newline to blackbox documentation
diff --git a/doc/org.eclipse.m2m.qvt.oml.doc/references/blackboxing.html b/doc/org.eclipse.m2m.qvt.oml.doc/references/blackboxing.html
index 7634869..de258e7 100644
--- a/doc/org.eclipse.m2m.qvt.oml.doc/references/blackboxing.html
+++ b/doc/org.eclipse.m2m.qvt.oml.doc/references/blackboxing.html
@@ -123,4 +123,5 @@
 	var eClass := object ecore::EClass {};
 	var qname := eClass.getQualifiedName();
 }
-</pre>
\ No newline at end of file
+</pre>
+<br/>