[docs] [lit] Add a more helpful description for lit.py's -s flag.

[yln]

Thanks!

llvm/docs/CommandGuide/lit.rst

84

shows -> show

[varungandhi-apple]

Addressed review comment: replace shows -> show.

[varungandhi-apple]

@yln could you please land the patch? I do not have commit access.

llvm/docs/CommandGuide/lit.rst

 
 .. option:: -q, --quiet
 
  Suppress any output except for test failures.
 
 .. option:: -s, --succinct
 
  Show less output, for example don't show information on tests that pass.
+ Also show a progress bar, unless ``--no-progress-bar`` is specificed.
 
 .. option:: -v, --verbose
 
  Show more information on test failures, for example the entire test output
  instead of just the test result.
 
 .. option:: -vv, --echo-all-commands
 

llvm/utils/lit/lit/cl_arguments.py

def parse_args():
 
     format_group = parser.add_argument_group("Output Format")
     # FIXME: I find these names very confusing, although I like the
     # functionality.
     format_group.add_argument("-q", "--quiet",
             help="Suppress no error output",
             action="store_true")
     format_group.add_argument("-s", "--succinct",
-            help="Reduce amount of output",
+            help="Reduce amount of output."
+                 " Additionally, show a progress bar,"
+                 " unless --no-progress-bar is specified.",
             action="store_true")
     format_group.add_argument("-v", "--verbose",
             dest="showOutput",
             help="Show test output for failures",
             action="store_true")
     format_group.add_argument("-vv", "--echo-all-commands",
             dest="echoAllCommands",
             action="store_true",