fix nu-std README (#11244)

related to
-
https://github.com/nushell/nushell/issues/10676#issuecomment-1842472941
from @suimong

# Description
the command in the `README.md` of `nu-std` should use `scope commands`
instead of `help commands`, which return an empty list.

# User-Facing Changes

# Tests + Formatting

# After Submitting
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Antoine Stevan 2023-12-06 16:26:02 +01:00 committed by GitHub
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@ -9,19 +9,15 @@ provide interactive utilities and building blocks for users writing casual scrip
To see what's here: To see what's here:
``` ```
> use std > use std
> help commands | select name usage | where name =~ "std " > scope commands | select name usage | where name =~ "std "
╭────┬─────────────────────────────┬────────────────────────────────────────────────────────────────╮ #┬───────────name────────────┬──────────────────────usage──────────────────────
│ # │ name │ usage │ 0│std assert │Universal assert command
├────┼─────────────────────────────┼────────────────────────────────────────────────────────────────┤ 1│std assert equal │Assert $left == $right
│ 0 │ std assert │ Universal assert command │ 2│std assert error │Assert that executing the code generates an error
│ 1 │ std assert equal │ Assert $left == $right │ 3│std assert greater │Assert $left > $right
. . . 4│std assert greater or equal│Assert $left >= $right
│ 11 │ std clip │ put the end of a pipe into the system clipboard. │ ... ...
│ 12 │ std dirs add │ Add one or more directories to the list. │ ─┴───────────────────────────┴─────────────────────────────────────────────────
. . .
├────┼─────────────────────────────┼────────────────────────────────────────────────────────────────┤
│ # │ name │ usage │
╰────┴─────────────────────────────┴────────────────────────────────────────────────────────────────╯
``` ```
## :toolbox: Using the standard library in the REPL or in scripts ## :toolbox: Using the standard library in the REPL or in scripts