docs: make it clear in the tutorial where the docs folder is (#1468)

* Make it clear where the `docs` folder is

It was not clear, to the beginner user—who this tutorial is for—where the `docs` folder was . The only reason I know this is because I'm a beginner user and I tried for too many minutes to find the `docs` folder inside the `website` folder. I had this assumption because the previous example is offered under the assumption that you're in the `website` folder.

Feel free to change the wording, I just want to make it clear where you should be looking, if you're new.

* Update tutorial-create-pages.md

docs/tutorial-create-pages.md

@@ -47,7 +47,7 @@ React is being used as a templating engine for rendering static markup. You can
 
 ## Create a Documentation Page
 
-1. Create a new file in the `docs` folder called `doc4.md`.
+1. Create a new file in the `docs` folder called `doc4.md`. The `docs` folder is in the root of your Docusaurus project, one level above `website`.
 1. Paste the following contents:
 
 ```