Section 2.5 Threat Modeling: add links to pytm and Threat Dragon

[jgadsden]

This PR covers issue #1059 .

• [X] This PR handles the issue and requires no additional PRs.
• [X] You have validated the need for this change.

What did this PR accomplish? This pull request provides links to the two OWASP threat modeling tool projects Pythonic Threat Modeling and Threat Dragon and closes #1059

[github-actions[bot]]

The following links are broken: FILE:document/2-Introduction/README.md [✖] https://www.it-cisq.org/the-cost-of-poor-software-quality-in-the-us-a-2020-report/ → Status: 403

[github-actions[bot]]

The following mistakes were identified:

/home/runner/work/wstg/wstg/document/2-Introduction/README.md 217:84 ✖ Incorrect usage of the term: “organisation”, use “organization” instead terminology

[jgadsden]

I can access the link https://www.it-cisq.org/the-cost-of-poor-software-quality-in-the-us-a-2020-report/ so maybe this test needs to be rerun

[github-actions[bot]]

The following links are broken: FILE:document/2-Introduction/README.md [✖] https://www.it-cisq.org/the-cost-of-poor-software-quality-in-the-us-a-2020-report/ → Status: 403

[kingthorin]

Thanks. I agree it’s a false positive.

I’ll get this reviewed shortly.