chore(docs): include missing links to Node.js APIs (oven-sh#5281)

These links make it easy to click and jump to another section.

Author: styfle

docs/runtime/nodejs-apis.md

@@ -94,7 +94,7 @@ This page is updated regularly to reflect compatibility status of the latest ver
 
 ### [`node:process`](https://nodejs.org/api/process.html)
 
-🟡 See `Globals > process`.
+🟡 See [`process`](#process) Global.
 
 ### [`node:punycode`](https://nodejs.org/api/punycode.html)
 
@@ -122,7 +122,7 @@ This page is updated regularly to reflect compatibility status of the latest ver
 
 ### [`node:sys`](https://nodejs.org/api/util.html)
 
-🟡 See `node:util`.
+🟡 See [`node:util`](#node-util).
 
 ### [`node:timers`](https://nodejs.org/api/timers.html)