fixes #198 -- update link in license

LICENSE

@@ -6,7 +6,7 @@ Certificate data from Mozilla as of: Thu Nov  3 19:04:19 2011#
 This is a bundle of X.509 certificates of public Certificate Authorities
 (CA). These were automatically extracted from Mozilla's root certificates
 file (certdata.txt).  This file can be found in the mozilla source tree:
-http://mxr.mozilla.org/mozilla/source/security/nss/lib/ckfw/builtins/certdata.txt?raw=1#
+https://hg.mozilla.org/mozilla-central/file/tip/security/nss/lib/ckfw/builtins/certdata.txt
 It contains the certificates in PEM format and therefore
 can be directly used with curl / libcurl / php_curl, or with
 an Apache+mod_ssl webserver for SSL client authentication.