Remove dead link in the release note

Summary: As per title.

Test Plan: Read it.

Reviewers: #bitcoin_abc, PiRK

Reviewed By: #bitcoin_abc, PiRK

Differential Revision: https://reviews.bitcoinabc.org/D16321

doc/release-notes.md

@@ -9,8 +9,7 @@ This release includes the following features and fixes:
 JSON-RPC
 ---
 
-All JSON-RPC methods accept a new [named
-parameter](JSON-RPC-interface.md#parameter-passing) called `args` that can
+All JSON-RPC methods accept a new named parameter called `args` that can
 contain positional parameter values. This is a convenience to allow some
 parameter values to be passed by name without having to name every value. The
 python test framework and `bitcoin-cli` tool both take advantage of this, so