improve use of One_Ring_inscription in 2004/anonymous

Use the `ring.pgm` image output, scaled to a height of 127
pixels and translated into PNG format.

Also fix the `tmp/year_prize.numbers` file to
change the award for the `2004_anonymous` entry
to use single quotes so that `tmp/gen_entry_json.sh`
won't re-introduce the double quotes into the
`2004/anonymous/.entry.json` file.

Ran `bin/readme2index.sh -v 1 2004/anonymous` to perform the above.

2004/anonymous/.entry.json

@@ -1,7 +1,7 @@
 {
     "no_comment" : "mandatory comment: because comments were removed from the original JSON spec",
     "entry_JSON_format_version" : "1.1 2024-02-11",
-    "award" : ""Best use of ""Precious"" Lines"",
+    "award" : "Best use of 'Precious' Lines",
     "year" : 2004,
     "dir" : "anonymous",
     "entry_id" : "2004_anonymous",