Make Canonical JSON reference a link

Signed-off-by: Joshua Lock <[email protected]>

Author: joshuagl

tuf-spec.md

@@ -504,8 +504,8 @@ deterministically by default so that signatures can be accurately verified.
 The chosen data format should be documented in the POUF of the implementation.
 The examples in this document use a subset of the JSON object format, with
 floating-point numbers omitted.  When calculating the digest of an
-object, we use the "canonical JSON" subdialect as described at
-    http://wiki.laptop.org/go/Canonical_JSON
+object, we use the "canonical JSON" subdialect as described at [Canonical JSON](
+http://wiki.laptop.org/go/Canonical_JSON).
 
 ## File formats: general principles ## {#file-formats-general-principles}