C#: Update test output to reflect that the query is now a path-problem query.

Author: michaelnebel

csharp/ql/test/query-tests/Security Features/CWE-091/XMLInjection/XMLInjection.expected

@@ -1 +1,8 @@
-| Test.cs:15:25:15:80 | ... + ... | $@ flows to here and is inserted as XML. | Test.cs:8:27:8:49 | access to property QueryString | User-provided value |
+edges
+| Test.cs:8:27:8:49 | access to property QueryString : NameValueCollection | Test.cs:15:25:15:80 | ... + ... |
+nodes
+| Test.cs:8:27:8:49 | access to property QueryString : NameValueCollection | semmle.label | access to property QueryString : NameValueCollection |
+| Test.cs:15:25:15:80 | ... + ... | semmle.label | ... + ... |
+subpaths
+#select
+| Test.cs:15:25:15:80 | ... + ... | Test.cs:8:27:8:49 | access to property QueryString : NameValueCollection | Test.cs:15:25:15:80 | ... + ... | $@ flows to here and is inserted as XML. | Test.cs:8:27:8:49 | access to property QueryString : NameValueCollection | User-provided value |