Get RTD build going

[pep8speaks]

Hello @IAlibay! Thanks for opening this PR. We checked the lines you've touched for PEP 8 issues, and found:

• In the file docs/source/conf.py:

Line 60:1: E265 block comment should start with '# ' Line 63:1: E265 block comment should start with '# ' Line 81:1: E266 too many leading '#' for block comment Line 82:1: E265 block comment should start with '# ' Line 83:1: E265 block comment should start with '# ' Line 84:1: E265 block comment should start with '# '

[IAlibay]

@hannahbaumann I'm going to have to merge this to get things rolling.