Update manual.yml

[ohhorob]

Add details about how to terminate argument processing.

A documentation update like this might help others that want to safely use positional arguments (#1986)

[nicowilliams]

I would prefer this fix:

diff --git a/docs/content/manual/manual.yml b/docs/content/manual/manual.yml
index ac977c3..ca31924 100644
--- a/docs/content/manual/manual.yml
+++ b/docs/content/manual/manual.yml
@@ -272,6 +272,12 @@ sections:
         Remaining arguments are positional JSON text arguments.  These
         are available to the jq program as `$ARGS.positional[]`.

+      * `--`:
+
+        Terminates argument processing.  Remaining arguments are
+        positional, either strings, JSON texts, or input filenames,
+        according to whether `--args` or `--jsonargs` were given.
+
       * `--run-tests [filename]`:

         Runs the tests in the given file or standard input.  This must

Would that work for you?

[ohhorob]

@vergenzt if you can reach a developer with write access they can merge this PR.

[vergenzt]

@ohhorob I personally sortof prefer @nicowilliams' explanation from #1989 (comment). Could you update this PR to use that suggestion?

[ohhorob]

Sure. I've changed this PR to use that suggestion.

[itchyny]

LGTM, thank you!