doc: update "who to cc in issues" chart

Refs: #6655 PR-URL: #6694 Reviewed-By: Myles Borins <[email protected]> Reviewed-By: Rich Trott <[email protected]> Reviewed-By: Anna Henningsen <[email protected]> Reviewed-By: Ingvar Stepanyan <[email protected]>

Author: Fishrock123

doc/onboarding-extras.md

@@ -2,23 +2,30 @@
 
 | subsystem | maintainers |
 | --- | --- |
-|`lib/buffer`|@trevnorris|
-|`lib/child_process`|@cjihrig, @bnoordhuis|
-|`lib/cluster`|@cjihrig, @bnoordhuis|
+|`lib/assert`|@nodejs/testing|
+|`lib/buffer`|@nodejs/buffer|
+|`lib/child_process`|@bnoordhuis, @cjihrig|
+|`lib/cluster`|@bnoordhuis, @cjihrig, @mcollina|
 |`lib/{crypto,tls,https}`|@nodejs/crypto|
 |`lib/domains`|@misterdjules|
-|`lib/{_}http{*}`|@indutny, @bnoordhuis, @mscdex, @nodejs/http|
-|`lib/net`|@indutny, @bnoordhuis, @nodejs/streams|
+|`lib/fs`, `src/{fs|file}` |@nodejs/fs|
+|`lib/{_}http{*}`|@nodejs/http|
+|`lib/net`|@bnoordhuis, @indutny, @nodejs/streams|
 | `lib/{_}stream{s|*}` |@nodejs/streams|
-|`lib/repl`|@fishrock123|
+|`lib/repl`|@addaleax, @fishrock123|
 |`lib/timers`|@fishrock123, @misterdjules|
-|`lib/zlib`|@indutny, @bnoordhuis|
+|`lib/util`|@bnoordhuis, @cjihrig, @evanlucas|
+|`lib/zlib`|@addaleax, @bnoordhuis, @indutny|
+|`bootstrap_node.js`|@fishrock123|
 |`src/async-wrap.*`|@trevnorris|
 |`src/node_crypto.*`|@nodejs/crypto|
 |`test/*`|@nodejs/testing|
 |`tools/eslint`, `.eslintrc`|@silverwind, @trott|
-| upgrading v8 |@bnoordhuis, @targos, @ofrobots|
-| upgrading npm |@thealphanerd, @fishrock123|
+| upgrading V8 |@nodejs/v8, @nodejs/post-mortem|
+| upgrading npm |@fishrock123, @thealphanerd|
+| upgrading c-ares |@jbergstroem|
+| upgrading http-parser |@jbergstroem, @nodejs/http|
+| upgrading libuv |@saghul|
 
 
 When things need extra attention, are controversial, or `semver-major`: @nodejs/ctc