adding ethics to duration table and adding slide link

[carriewright11]

Does this seem like the correct duration @ehumph ?

[github-actions[bot]]

No spelling errors! :tada: Comment updated at 2023-05-04 with changes from f5827bfde76f6243c8ff101557e780cdc3f80ac2

[github-actions[bot]]

No broken urls! :tada: Comment updated at 2023-05-04 with changes from f5827bfde76f6243c8ff101557e780cdc3f80ac2

[github-actions[bot]]

Re-rendered previews from the latest commit:

• See preview of Bookdown here
• See preview of Coursera/Leanpub version here
• Download the preview of .docx file

Updated at 2023-05-04 with changes from f5827bfde76f6243c8ff101557e780cdc3f80ac2

[carriewright11]

The url should work after the ethics chapter merge