http2,doc: links missing definition

[refack]

• Version: 8.4.0
• Platform: *
• Subsystem: doc

https://nodejs.org/api/http2.html & https://github.com/nodejs/node/blob/master/doc/api/http2.md are rendered with [...][] around links that don't have a definition (in the footer).

For example:

node/doc/api/http2.md

Lines 1904 to 1907 in 85d7d97

	A `Http2ServerRequest` object is created by [`http2.Server`][] or
	[`http2.SecureServer`][] and passed as the first argument to the
	[`'request'`][] event. It may be used to access a request status, headers and
	data.

[thelostone-mc]

@refack Calling dibs if it hasn't been addressed yet ^_^

• Would these map to Class: Http2Server and Class: Http2SecureServer respectively ?
• Readable Stream redirects to a page not found.

Also http2 vs http ? Scenarios/ Benefits of using the former over the latter?

[sharababy]

@refack
Hi , I have added the link definitions to the footer and pushed it to my fork.
https://github.com/sharababy/node/commit/e04feca80619af35480dbb35e52264623b28c0b8

EDIT: So silly of me , I have only added 2 such links in this commit , I am adding the rest of them now. I thought these were the only 2 such instances.

UPDATE: New commit with all changes is here : https://github.com/sharababy/node/commit/8b67046c677d84c8c4fa1ecf51d75119b42f5c51