Invalid external links in the DG

[nus-pe-bot]

Note from the teaching team: This bug was reported during the Part II (Evaluating Documents) stage of the PE. You may reject this bug if it is not related to the quality of documentation.

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There are a few source code file links that lead to a 404 Page Not Found web page in GitHub (e.g, Main and MainApp; see below for the links). Should they refer to the actual source code files of the application?

Steps to reproduce:

1. Navigate to Page 3 of the DG.
2. Locate the links as shown in the image below (they can be found after the Tip box):
   
3. Click on either the Main or MainApp links.

Expected outcome:
The links would refer to the respective source code files in the GitHub repository.

Actual outcome:
The links refer to a 404 Page Not Found web page on GitHub.

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_{[original: nus-cs2103-AY2021S2/pe-interim#1891] [original labels: severity.Low type.DocumentationBug]}

[JodyLorah]

Team's Response

No response provided.

Duplicate status (if any):

Duplicate of #3167