Fix references to renamed range command (nushell#2041)

Since nu 0.102.0, the range command has been renamed to slice. Two pages
in the book still referenced the old command name (with corresponding
broken hyperlinks).

Author: nome

book/navigating_structured_data.md

@@ -344,4 +344,4 @@ $with_default_value.1.a
 ## Other commands for accessing structured data
 
 - [`reject`](/commands/docs/reject.md) is the opposite of `select`, removing the specified rows and columns
-- [`range`](/commands/docs/range.md) specifies the rows of a list or table to select using a [`range`](./types_of_data.md#ranges) type
+- [`slice`](/commands/docs/slice.md) specifies the rows of a list or table to select using a [`range`](./types_of_data.md#ranges) type

book/nushell_map.md

@@ -37,8 +37,7 @@ The idea behind this table is to help you understand how Nu builtins and plugins
 | [`transpose`](/commands/docs/transpose.md)                 | `pivot`                       |                                                      |                                            |                                                 |
 | [`ps`](/commands/docs/ps.md)                               |                               |                                                      | `Get-Process`, `ps`, `gps`                 | `ps`                                            |
 | [`pwd`](/commands/docs/pwd.md)                             |                               |                                                      | `Get-Location`, `pwd`                      | `pwd`                                           |
-| [`range` (command)](/commands/docs/range.md)               | `limit x offset y`, `rownumber` | `ElementAt`                                        | `[x]`, indexing operator, `ElementAt`      |                                                 |
-| [`range` (type)](types_of_data.html#ranges)                |                               | `Range`                                              | `1..10`, `'a'..'f'`                        |                                                 |
+| [`range`](types_of_data.html#ranges)                       |                               | `Range`                                              | `1..10`, `'a'..'f'`                        |                                                 |
 | [`reduce`](/commands/docs/reduce.md)                       |                               | `Aggregate`                                          |                                            |                                                 |
 | [`rename`](/commands/docs/rename.md)                       |                               |                                                      | `Rename-Item`, `ren`, `rni`                | `mv`                                            |
 | [`reverse`](/commands/docs/reverse.md)                     |                               | `Reverse`                                            | `[Array]::Reverse($var)`                   |                                                 |
@@ -49,6 +48,7 @@ The idea behind this table is to help you understand how Nu builtins and plugins
 | [`skip`](/commands/docs/skip.md)                           | `where row_number()`          | `Skip`                                               | `Select-Object -Skip`                      |                                                 |
 | [`skip until`](/commands/docs/skip_until.md)               |                               | `SkipWhile`                                          |                                            |                                                 |
 | [`skip while`](/commands/docs/skip_while.md)               |                               | `SkipWhile`                                          |                                            |                                                 |
+| [`slice`](/commands/docs/slice.md)                         | `limit x offset y`, `rownumber` | `ElementAt`                                        | `[x]`, indexing operator, `ElementAt`      |                                                 |
 | [`sort-by`](/commands/docs/sort-by.md)                     | `order by`                    | `OrderBy`, `OrderByDescending`, `ThenBy`, `ThenByDescending` | `Sort-Object`, `sort`              | `sort`                                          |
 | [`str`](/commands/docs/str.md)                             | String functions              | `String` class                                       | `String` class                             |                                                 |
 | [`str join`](/commands/docs/str_join.md)                   | `concat_ws`                   | `Join`                                               | `Join-String`                              |                                                 |