Invalid link for FEMA Federal continuity directive

[ahouseholder]

Describe the bug

On the page

https://certcc.github.io/SSVC/reference/decision_points/mission_impact

The reference

Federal Emergency Management Agency. Federal continuity directive 2: federal executive branch mission essential functions and candidate primary mission essential functions identification and submission process. Technical Report, US Department of Homeland Security, Federal Emergency Management Agency, 2017. URL: https://www.fema.gov/media-library-data/1499702987348-c8eb5e5746bfc5a7a3cb954039df7fc2/FCD-2June132017.pdf.

leads to a 404.

To Reproduce

1. Go to https://certcc.github.io/SSVC/reference/decision_points/mission_impact
2. Find "Federal Emergency Management Agency. Federal continuity directive 2: federal executive branch mission essential functions and candidate primary mission essential functions identification and submission process. Technical Report, US Department of Homeland Security, Federal Emergency Management Agency, 2017. URL: https://www.fema.gov/media-library-data/1499702987348-c8eb5e5746bfc5a7a3cb954039df7fc2/FCD-2June132017.pdf"
3. Click link. See 404.

Expected behavior

As of this issue's creation date, it looks like a valid url is https://www.fema.gov/sites/default/files/2020-07/Federal_Continuity_Directive-2_June132017.pdf