Links in the docs are not working

[SAtacker]

The Installation link seems to be lost (404)

Installation

For Instructions head over to Installation

Same Issue with

• Detailed Usage
• Build

For detailed usage head to Detailed Usage

Build from source

For Instructions head over to Building from source

However on adding /en/latest/ to https://simppru.readthedocs.io/ i.e. before usage/usage-simppru seems to work for all

[VedantParanjape]

Solved by #7