fix links in 1992/buzzard.2/buzzard.2.README.html

The `1992/buzzard.2/buzzard.2.README.md` has been improved
so that links to files that is referenced are
directed to the proper web pages (web site or GitHub).

Links in `1992/buzzard.2/buzzard.2.README.md` markdown
files have been changed to the generated HTML files.

Changed `bin/gen-other-html.sh` VERSION from to "1.0.4 2024-04-13"
to "1.1 2024-04-20".

By default, we substitute _%%REPO_URL%%_ and _%%SITE_URL%%_
in inc files.

Changed `bin/subst.default.sh` VERSION from to "1.2.3 2024-04-13"
to "1.3 2024-04-20".

All `-s TOKEN=value` substitutions are applied to all markdown files
that are processed by `bin/md2html.sh`.

Substitutions of and **%%TOKEN%%** are performed on included HTML
content, content generated by the ‘before tool’ (-b tool), content
generated by the ‘after tool’ (-a tool), as well as the markdown
content given to the pandoc wrapper tool (-p tool).

It is an error, unless -S is given, for any phase, except HTML phases
20-29, to not substitute all **%%TOKEN%%**'s. For HTML phases 20-29, any
**%%TOKEN%%** that is not substituted are passed thru without substitution.

Update `bin/index.html` to clarify

Changed `bin/md2html.sh` VERSION from to "1.4 2024-04-18"
to "1.5 2024-04-20".

Fix the _BEFORE: 1st line of markdown file_ and _AFTER: last line
of markdown file_ HTML comments so that the true markdown file
source (not some temporary file) is identified.  This prevents
`authors.html`, `location.html` and `years.html` from always changing
due to different temporary files being used on each run.

Run `make www` to perform the above.

bin/subst.default.sh

@@ -92,7 +92,7 @@ shopt -s globstar	# enable ** to match all files and zero or more directories an
 
 # set variables referenced in the usage message
 #
-export VERSION="1.2.3 2024-04-13"
+export VERSION="1.3 2024-04-20"
 NAME=$(basename "$0")
 export NAME
 export V_FLAG=0
@@ -260,6 +260,16 @@ fi
 echo "-s"
 echo "HEADER_1=The International Obfuscated C Code Contest"
 
+# output REPO_URL substitution
+#
+echo "-s"
+echo "REPO_URL=$REPO_URL"
+
+# output SITE_URL substitution
+#
+echo "-s"
+echo "SITE_URL=$SITE_URL"
+
 # output DOCROOT_SLASH substitution
 #
 echo "-s"
@@ -271,6 +281,7 @@ export VALIDATOR_ENCODED_URL
 echo "-s"
 echo "VALIDATOR_ENCODED_URL=$VALIDATOR_ENCODED_URL"
 
+
 # All Done!!! -- Jessica Noll, Age 2
 #
 exit 0