doc: move jdalton to emeritus

In email, John-David Dalton confirmed that it was appropriate to move to
emeritus at this time.

README.md

@@ -347,8 +347,6 @@ For information about the governance of the Node.js project, see
 **Jackson Tian** <[email protected]>
 * [jasnell](https://github.com/jasnell) -
 **James M Snell** <[email protected]> (he/him)
-* [jdalton](https://github.com/jdalton) -
-**John-David Dalton** <[email protected]>
 * [jkrems](https://github.com/jkrems) -
 **Jan Krems** <[email protected]> (he/him)
 * [joaocgreis](https://github.com/joaocgreis) -
@@ -516,6 +514,8 @@ For information about the governance of the Node.js project, see
 **Jason Ginchereau** <[email protected]>
 * [jbergstroem](https://github.com/jbergstroem) -
 **Johan Bergström** <[email protected]>
+* [jdalton](https://github.com/jdalton) -
+**John-David Dalton** <[email protected]>
 * [jhamhader](https://github.com/jhamhader) -
 **Yuval Brik** <[email protected]>
 * [joshgav](https://github.com/joshgav) -