Reference the correct command: insert -> delete (#14696)

# Description
The docs reference "insert into" for the "delete" command.

# User-Facing Changes
N/A

# Tests + Formatting
I don't know of any tests for docs.
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---------

Co-authored-by: Darren Schroeder <343840+fdncred@users.noreply.github.com>

crates/nu-command/src/stor/delete.rs

@@ -16,7 +16,7 @@ impl Command for StorDelete {
             .required_named(
                 "table-name",
                 SyntaxShape::String,
-                "name of the table you want to insert into",
+                "name of the table you want to delete or delete from",
                 Some('t'),
             )
             .named(