improve the status.html page

Changed `bin/gen-status.sh` VERSION from "1.0 2024-03-09"
to "1.1 2024-03-10".

Changed `bin/status2html.sh` VERSION from "1.0 2024-03-09"
to "1.1 2024-03-10".

Improved for explanatory text added near the top of the
`index.html` page by `bin/status2html.sh`.

While `bin/status2html.sh` in intended as tool that is internally
called only, we allowed for a 0 arg use for those who are simply
curious as to what it does.

Tested various _contest_status_ values with `bin/gen-status.sh`.
This resulted in a forced change of _status_update_ in `status.json`.

Removed extraneous whitespace from `bin/output-index-author.sh`.

Performed `make www` to finalize all of the above, although a
`make gen_status` followed by `make gen_sitemap` would have
been sufficient.

sitemap.xml

@@ -19150,7 +19150,7 @@
 </url>
 <url>
     <loc>https://ioccc-src.github.io/temp-test-ioccc/bin/gen-status.sh</loc>
-    <lastmod>2024-03-10T03:06:23+00:00</lastmod>
+    <lastmod>2024-03-10T20:23:09+00:00</lastmod>
 </url>
 <url>
     <loc>https://ioccc-src.github.io/temp-test-ioccc/bin/gen-top-html.sh</loc>
@@ -19178,7 +19178,7 @@
 </url>
 <url>
     <loc>https://ioccc-src.github.io/temp-test-ioccc/bin/output-index-author.sh</loc>
-    <lastmod>2024-03-09T00:06:59+00:00</lastmod>
+    <lastmod>2024-03-10T20:58:58+00:00</lastmod>
 </url>
 <url>
     <loc>https://ioccc-src.github.io/temp-test-ioccc/bin/output-index-inventory.sh</loc>
@@ -19210,7 +19210,7 @@
 </url>
 <url>
     <loc>https://ioccc-src.github.io/temp-test-ioccc/bin/status2html.sh</loc>
-    <lastmod>2024-03-10T03:16:40+00:00</lastmod>
+    <lastmod>2024-03-10T20:59:43+00:00</lastmod>
 </url>
 <url>
     <loc>https://ioccc-src.github.io/temp-test-ioccc/bin/subst.default.sh</loc>
@@ -19414,7 +19414,7 @@
 </url>
 <url>
     <loc>https://ioccc-src.github.io/temp-test-ioccc/status.json</loc>
-    <lastmod>2024-03-10T17:01:12+00:00</lastmod>
+    <lastmod>2024-03-10T20:55:10+00:00</lastmod>
 </url>
 <url>
     <loc>https://ioccc-src.github.io/temp-test-ioccc/thanks-for-help.html</loc>