tests/FILEFORMAT: mention PSL as a valid feture to check for

For example in test 1136

diff --git a/tests/FILEFORMAT b/tests/FILEFORMAT
index 20ff64a6b12901431401f3a29c33cb5c8f38665a..a8e74b31e4fda1ff392a3ab0a885b0ab29e339a3 100644 (file)
--- a/tests/FILEFORMAT
+++ b/tests/FILEFORMAT
@@ -222,6 +222,7 @@ Metalink
 NSS
 NTLM
 OpenSSL
+PSL
 socks
 SPNEGO
 SSL