Update 09-Test_Upload_of_Malicious_Files.md

[0xmaximus]

This PR covers issue #1021

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

What did this PR accomplish?

Adding Test for oversized image file upload

[github-actions[bot]]

The following issues were identified: document/4-Web_Application_Security_Testing/10-Business_Logic_Testing/09-Test_Upload_of_Malicious_Files.md:25:1 MD007/ul-indent Unordered list indentation [Expected: 4; Actual: 2]

[github-actions[bot]]

The following mistakes were identified:

/home/runner/work/wstg/wstg/document/4-Web_Application_Security_Testing/10-Business_Logic_Testing/09-Test_Upload_of_Malicious_Files.md 15:253 ✖ Incorrect usage of the term: “IDS”, use “IDs” instead terminology 76:36 ✖ Incorrect usage of the term: “file names”, use “filenames” instead terminology

[github-actions[bot]]

The following issues were identified: document/4-Web_Application_Security_Testing/10-Business_Logic_Testing/09-Test_Upload_of_Malicious_Files.md:25:1 MD007/ul-indent Unordered list indentation [Expected: 4; Actual: 2]

[github-actions[bot]]

The following mistakes were identified:

/home/runner/work/wstg/wstg/document/4-Web_Application_Security_Testing/10-Business_Logic_Testing/09-Test_Upload_of_Malicious_Files.md 15:253 ✖ Incorrect usage of the term: “IDS”, use “IDs” instead terminology