Update javascript/2020-11-09-jwt.md

Co-authored-by: Asger F <asgerf@github.com>

Author: erik-krogh

javascript/2020-11-09-jwt.md

@@ -1,5 +1,5 @@
 lgtm,codescanning
-* Libraries implementing JWT have been modeled. 
+* The security queries now track taint through JWT decoding, and warns about hard-coded JWT signing keys.
   Affected packages are
     [jsonwebtoken](https://www.npmjs.com/package/jsonwebtoken) and
     [jwt-decode](https://www.npmjs.com/package/jwt-decode)