[DOC] update troubleshooting section of installation guide (#270)
[DOC] update troubleshooting section of installation guide (#270)

* added solution to Cython error in installation docs

* Update install.rst

Co-authored-by: Ori Mizrahi <8aee036fb90cb4c726e3cbe0aba7552176e69603@ucsb.edu>
Co-authored-by: Michael Beyeler <c39c93bb4a0bed84801bde1cdcc4336f26e3fee7@users.noreply.github.com>
uwescience/pulse2percept,uwescience/pulse2percept,mbeyeler/pulse2percept,uwescience/pulse2percept