Go: Fix tests.

Author: aschackmull

go/ql/test/example-tests/snippets/typeinfo.expected

@@ -1,7 +1,7 @@
-| file://:0:0:0:0 | parameter -1 of AddCookie |
-| file://:0:0:0:0 | parameter -1 of Clone |
-| file://:0:0:0:0 | parameter -1 of Write |
-| file://:0:0:0:0 | parameter -1 of WriteProxy |
+| file://:0:0:0:0 | [summary param] -1 in AddCookie |
+| file://:0:0:0:0 | [summary param] -1 in Clone |
+| file://:0:0:0:0 | [summary param] -1 in Write |
+| file://:0:0:0:0 | [summary param] -1 in WriteProxy |
 | main.go:18:12:18:14 | argument corresponding to req |
 | main.go:18:12:18:14 | definition of req |
 | main.go:20:5:20:7 | req |