Suggestion: Link each mention of a React API to the reference docs

I'm new to React and just started reading the documentation.

I noticed that references to the API are not links, just plain text. It would be helpful if they were actual links to the API.

Example: On this page https://reactjs.org/docs/rendering-elements.html it says:

The yellow API reference should actually be a link to the ReactDOM.render(), meaning a link to https://reactjs.org/docs/react-dom.html#render.
This helps me a lot because I can easily discover the complete reference of that function, the complete list and description of the parameters, function behaviors, different possible usage, etc.
As I go through the documentation and concepts, I can quickly go back and forth between concepts and API reference. It's much quicker to have links I can open in a new tab, instead of manually searching in the API reference every time.

从 issue 中指出的渲染元素文档页面开始，找到其中以纯文本形式出现的 ReactDOM.render() 引用。检查周围的文档，查找其他需要进行相同处理的 API 提及；当这些引用链接到相应的 API 参考页面时，即表示完成。