Command not found: fd on Ubuntu

**What did you expect to happen?**
`cd .` lists all subdirectories.

**What actually happened?**
Command not found: fd.

**Output**
```text
__enhancd::filepath::get_dirs_in_cwd:5: command not found: fd
no entry
```

**Additional context**

The command `fd` is `fdfind` on Ubuntu. I have an alias `alias fd=fdfind`. However, `enhancd` still can't use `fd`.
