Remove unused input directory specification from doc pages

[soaressgabriel]

Checklist

• Have you followed the guidelines in our Contributing document?
• Have you checked to ensure there aren't other open Pull Requests for the same update/change?
• Added tests for changed code.
• Updated documentation for changed code.

Description

• Remove unused input directory specification from doc pages;
• This is a continuation of the implementation of the proposed solution that was initially carried out in Implement a configuration system within the application that can handle multiple formats #103.

Related Issue

• Resolve Remove unused input directory specification from model configuration #119.

Motivation and context

• See Remove unused input directory specification from model configuration #119 description.

How has this been tested

• Manually.

Screenshots

• N/A

[LINAMARIAOSORIO]

LGTM