Support partially URL-encoded paths

[fregante]

See refined-github/refined-github#8185

I'm not sure if there's anything to do here, maybe getRepo can normalize the path

Example:

https://github.com/typescript-eslint/typescript-eslint/blob/86409083167bee4ba1ad3ebba22785b3a4a262ee/packages%2Feslint-plugin%2Fdocs%2Frules%2Fstrict-boolean-expressions.mdx