Cant't change the name of main html file in the output of `nim doc`?

[monsoonman]

Thanks @PMuch. You are right.

I have the following structure.
    
    
    src/
    ├── bmo.nim
    ├── bmopkg/
    │   ├── cli.nim
    │   ├── command.nim
    │   ├── common.nim
    │   ├── install.nim
    │   └── subcom.nim
    └── data/
        └── install_choco.ps1
    
    
    Run

If I move `data` out of the `src`, it generates `index.hml` as main file.