dune test formatting of dune files

log.txt

➜  1 cat dune-project                                                                                                                          4.13.1+flambda
(lang dune 2.9)

(name A)

(package 
  (name A)
  (description 
"\| this is a block
"\| of text"
))

➜  1 dune format-dune-file dune-project                                                                                                        4.13.1+flambda
(lang dune 2.9)

(name A)

(package
 (name A)
 (description "this is a block\nof text\"\n"))
➜  1 dune --version                                                                                                           
2.9.3