update #4455, regenerate commands' docs and update make_docs script (#4586)

* feat: update #4455, regenerate commands' docs

* chore: update make_docs script

docs/commands/save.md

@@ -13,5 +13,16 @@ Save a file.
 ## Parameters
 
  -  `filename`: the filename to use
- -  `--raw`: open file as raw binary
+ -  `--raw`: save file as raw binary
 
+## Examples
+
+Save a string to foo.txt in current directory
+```shell
+> echo 'save me' | save foo.txt
+```
+
+Save a record to foo.json in current directory
+```shell
+> echo { a: 1, b: 2 } | save foo.json
+```