Auto-generate markdown command docs (#4451)

* Finish updating

* a couple improvements

* Update renames

* cleanup examples

docs/commands/from.md

@@ -1,61 +1,12 @@
-# from csv
+---
+title: from
+layout: command
+version: 0.59.0
+---
 
-Converts content (string or binary) into a table. The source format is specified as a subcommand, like `from csv` or `from json`.
+Parse a string or binary data into structured data
 
-Use this when nushell cannot determine the input file extension.
+## Signature
 
-## Available Subcommands
+```> from ```
 
-* from bson
-* [from csv](from-csv.md)
-* from eml
-* [from ics](from-ics.md)
-* [from ini](from-ini.md)
-* [from json](from-json.md)
-* [from ods](from-ods.md)
-* from sqlite
-* from ssv
-* [from toml](from-toml.md)
-* [from tsv](from-tsv.md)
-* [from url](from-url.md)
-* [from vcf](from-vcf.md)
-* [from xlsx](from-xlsx.md)
-* [from xml](from-xml.md)
-* [from yaml](from-yaml.md)
-
-*Subcommands without links are currently missing their documentation.*
-
-## Example for `from csv`
-
-Let's say we have the following file:
-
-```shell
-> cat pets.txt
-animal, name, age
-cat, Tom, 7
-dog, Alfred, 10
-chameleon, Linda, 1
-```
-
-`pets.txt` is actually a .csv file but it has the .txt extension, `open` is not able to convert it into a table:
-
-```shell
-> open pets.txt
-animal, name, age
-cat, Tom, 7
-dog, Alfred, 10
-chameleon, Linda, 1
-```
-
-To get a table from `pets.txt` we need to use the `from csv` command:
-
-```shell
-> open pets.txt | from csv
-━━━┯━━━━━━━━━━━┯━━━━━━━━━┯━━━━━━
- # │ animal    │  name   │  age
-───┼───────────┼─────────┼──────
- 0 │ cat       │  Tom    │  7
- 1 │ dog       │  Alfred │  10
- 2 │ chameleon │  Linda  │  1
-━━━┷━━━━━━━━━━━┷━━━━━━━━━┷━━━━━━
-```