I have simply no idea on how can I link to another document in the reST file.
I want to link a file named install.rst to my quickstart guide in a paragraph.
install.rst
To referecnce other files I had to include the following in the conf.py. I took the code from the docs of Pillow(PIL fork) here.
conf.py
extensions = ['sphinx.ext.intersphinx']
I think the inter-sphinx extension came to my help. It linked across the other doc pages.