In reference to the code listed at:
https://www.docsy.dev/docs/adding-content/navigation/#adding-icons-to-the-top-level-menu

The double-quote in the "pre" causes the rebuild to fail.

The error message:
Change of config file detected, rebuilding site.
2023-06-16 21:34:45.442 -0400
ERROR 2023/06/16 21:34:45 Failed to reload config: failed to load config: "xxx\hugo.toml:240:22": unmarshal failed: toml: expected newline but got U+0066 'f'
Rebuilt in 9 ms

Changing it to a single-quote fixes it.

Bad code:
pre = "<i class="fa-brands fa-github"></i>"

Good code:
pre = "<i class='fa-brands fa-github'></i>"

Docsy is amazing! Thank you to everyone on the team for your hard work.