doc: add missing step to npm release process

PR-URL: https://github.com/nodejs/node/pull/27105
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: Yongsheng Zhang <zyszys98@gmail.com>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>

doc/guides/maintaining-npm.md

@@ -25,13 +25,14 @@ or if you already have npm cloned make sure the repo is up to date
 
 ```console
 $ git remote update -p
-$ git reset --hard origin latest
+$ git reset --hard origin/latest
 ```
 
 ## Step 2: Build release
 
 ```console
 $ git checkout vX.Y.Z
+$ make
 $ make release
 ```