Remove /RESOURCE flag documentation on ilasm. (dotnet/coreclr#20818)
* Remove /RESOURCE flag on ilasm.
* Revert "Remove /RESOURCE flag on ilasm."
This reverts commit dotnet/coreclr@
7d1a9ac959a94359d2f1ef5f70ec7041804ec6f4.
* Update documentation in ilasm switches.
* Update documentation to say that the obj file has to come from a .res file.
* Remove documentation of the /RESOURCE switch. Leave the switch code-path in place for corefx.
Commit migrated from https://github.com/dotnet/coreclr/commit/
8826f6f8c07c325046b78f28c57b24b201e487d2