Merge #16605: Add missing contributor to 0.18.1 release notes

862cbf3 Add missing contributor to release notes (MeshCollider)

Pull request description:

  The user contacted me on Twitter and pointed out that he had contributed in both the reporting of the bug #16012 as well as a number of PRs following it, so I think he deserves to be credited in the release notes

  (also changed to use my real name while I'm there)

ACKs for top commit:
  laanwj:
    ACK 862cbf3

Tree-SHA512: 94bbe168783243fd436b29b741be182fb0dcc247a6e8f52dafcd301ebc63f21e4e035677aa038db95e2e9d2062f5811f2dda1fd6d53966649773c69babb3f61b

Author: laanwj

doc/release-notes/release-notes-0.18.1.md

@@ -126,8 +126,9 @@ Thanks to everyone who directly contributed to this release:
 - Kristaps Kaupe
 - Luke Dashjr
 - MarcoFalke
-- MeshCollider
+- Michele Federici
 - Pieter Wuille
+- Samuel Dobson
 - shannon1916
 - tecnovert
 - Wladimir J. van der Laan