nu: update page (#7485)

pages/common/nu.md

@@ -1,15 +1,16 @@
 # nu
 
 > Nushell ("a new type of shell") takes a modern, structured approach to your command-line.
+> See also: `elvish`.
 > More information: <https://www.nushell.sh>.
 
 - Start an interactive shell session:
 
 `nu`
 
-- Execute a command and then exit:
+- Execute commands:
 
-`nu --commands "{{command}}"`
+`nu --commands "{{echo 'nu is executed'}}"`
 
 - Execute a script:
 
@@ -18,7 +19,3 @@
 - Execute a script with logging:
 
 `nu --loglevel {{error|warn|info|debug|trace}} {{path/to/script.nu}}`
-
-- Print the Nushell version:
-
-`nu --version`