In the top-level .editorconfig, note that we don't use CMake's standard
indentation.
Remove ascendtext.[ch] from wiretap/.editorconfig since it's no longer
needed.
Fall back on the Wayback Machine for some links.
Change-Id: I6a44a2caaeb4fa521c2f08196e7c36069e3bb842
Reviewed-on: https://code.wireshark.org/review/34103
Reviewed-by: Guy Harris <guy@alum.mit.edu>