Module documentation link is wrong

[Alonso-Pablo]

The link to the documentation in the module folder does not exist. /module.html is missing an s (/modules.html).

File:
https://github.com/mathisGarberg/angular-folder-structure/blob/master/src/app/modules/README.md

Wrong link:
https://angular-folder-structure.readthedocs.io/en/latest/module.html

Good link:
https://angular-folder-structure.readthedocs.io/en/latest/modules.html

[Compacct]

/attempt #165