doc: add gyp maintain info

Author: gengjiawen

doc/api/n-api.md

@@ -162,7 +162,7 @@ the native addon.
 
 [node-gyp][] is a build system based on Google's [GYP][] tool and comes
 bundled with npm. GYP, and therefore node-gyp, requires that Python be
-installed.
+installed. Currently gyp is maintained in [gyp-next][] by @nodejs/gyp team.
 
 Historically, node-gyp has been the tool of choice for building native
 addons. It has widespread adoption and documentation. However, some
@@ -5986,6 +5986,7 @@ the add-on's file name during loading.
 [Error handling]: #n_api_error_handling
 [GCC]: https://gcc.gnu.org
 [GYP]: https://gyp.gsrc.io
+[gyp-next]: https://github.com/nodejs/gyp-next
 [GitHub releases]: https://help.github.com/en/github/administering-a-repository/about-releases
 [LLVM]: https://llvm.org
 [Native Abstractions for Node.js]: https://github.com/nodejs/nan