Merge pull request JuliaLang#15047 from josefsachsconning/patch-1

Update base.rst

doc/stdlib/base.rst

@@ -768,7 +768,7 @@ System
 .. data:: DevNull
 
  Used in a stream redirect to discard all data written to it. Essentially equivalent to /dev/null on Unix or NUL on Windows.
- Usage: ``run(`cat test.txt` |> DevNull)``
+ Usage: ``run(pipeline(`cat test.txt`, DevNull))``
 
 .. function:: success(command)