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

* feat: update #4455, regenerate commands' docs

* chore: update make_docs script

docs/commands/use.md

@@ -14,3 +14,19 @@ Use definitions from a module
 
  -  `pattern`: import pattern
 
+## Examples
+
+Define a custom command in a module and call it
+```shell
+> module spam { export def foo [] { "foo" } }; use spam foo; foo
+```
+
+Define an environment variable in a module and evaluate it
+```shell
+> module foo { export env FOO_ENV { "BAZ" } }; use foo FOO_ENV; $env.FOO_ENV
+```
+
+Define a custom command that participates in the environment in a module and call it
+```shell
+> module foo { export def-env bar [] { let-env FOO_BAR = "BAZ" } }; use foo bar; bar; $env.FOO_BAR
+```