Antoine Stevan 9b139330f8
stdlib: fix the names of the help commands in help.nu (#9252)
related to the changes in
- #9193

# Description
when we change the namespace of a module, the internal calls to the
`export`ed commands needs to be updated as well 👀 😆

without this, we have the following pretty error:
```
> std help ansi
Error:   × std::help::item_not_found
   ╭─[entry #1:1:1]
 1 │ std help ansi
   ·          ──┬─
   ·            ╰── item not found
   ╰────
```
2023-05-20 17:37:17 +02:00
..