docs: change ndjson website link to specs

Author: hacdias

src/routing/http-routing-v1.md

@@ -101,7 +101,7 @@ This API does not support pagination, but optional pagination can be added in a
 ## Streaming
 
 This API supports streaming requests made by sending an `Accept` HTTP Header containing
-`application/x-ndjson`. The response will be formatted as [Newline Delimited JSON (ndjson)](http://ndjson.org/),
+`application/x-ndjson`. The response will be formatted as [Newline Delimited JSON (ndjson)](https://github.com/ndjson/ndjson-spec),
 with one *read provider record* per line: