How to bring up unity document page from script editor (visual studio)?

Hi, I'm a newbie in unity, and just start learning from the tutorials.
In the video, it can bring up the document page from script editor by pressing Ctrl + (single quote) , but it doesn't work.
It seems that the editor has been changed from MonoDevelop to Visutal Studio, and the hotkey is different.

May I know what's the hotkey to bring up the document page in visual studio? Thanks.