Trying to include external files in documentation does not work

[RedX2501]

Operating System: Windows

DocFX Version Used: 2.56.1

Template used: statictoc

Steps to Reproduce:

According to the documentation (https://dotnet.github.io/docfx/tutorial/docfx.exe_user_manual.html#41-array-format) build -> content -> files supports the dest property and the json schema confirms this.

Expected Behavior:

I'm trying to copy my changelog which is in another folder into the generated articles of the generated documentation.

Actual Behavior:

It seems that dest is ignored and the file is copied simply relative to the src property (which seems to be respected).