Update header of guidelines.md and rules.md based on status.json

In a few cases, the error message related to a file or directory
test was corrected.

Changed `bin/gen-sitemap.sh` VERSION from "1.3.6 2024-04-13"
to "1.3.7 2024-04-14".

Changed `bin/gen-year-index.sh` VERSION from "1.0.6 2024-04-13"
to "1.0.7 2024-04-14".

Changed `bin/untar-year.sh` VERSION from "1.0.1 2024-04-13"
to "1.0.2 2024-04-14".

Updated `bin/gen-status.sh` to change the header of `next/guidelines.md`
and `next/rules.md` to match the _contest_status_ in `status.json`.

Moved `make gen_top_html` after `make gen_status` in `make www`
and in `make quick_www` rules in the top Makefile.

Changed `bin/gen-status.sh` VERSION from "1.2.1 2024-04-13"
to "1.3 2024-04-14".

Fixed the DESCRIPTION for `next/guidelines.html`.

Run `make www` to perform the above and test under macOS.

Makefile

@@ -266,10 +266,10 @@ help:
 	@echo make gen_location
 	@echo make gen_years
 	@echo make entry_index
-	@echo make gen_top_html
 	@echo make gen_other_html
 	@echo make gen_year_index
 	@echo make gen_status
+	@echo make gen_top_html
 	@echo make quick_entry_index
 	@echo make quick_www
 	@echo make www
@@ -434,9 +434,9 @@ quick_www:
 	${MAKE} gen_location
 	${MAKE} gen_years
 	${MAKE} gen_year_index
-	${MAKE} gen_top_html
 	${MAKE} gen_other_html
 	${MAKE} gen_status
+	${MAKE} gen_top_html
 	${MAKE} quick_entry_index
 	${MAKE} gen_sitemap
 	@echo '=-=-=-=-= IOCCC complete make $@ =-=-=-=-='
@@ -456,9 +456,9 @@ www:
 	${MAKE} gen_location
 	${MAKE} gen_years
 	${MAKE} gen_year_index
-	${MAKE} gen_top_html
 	${MAKE} gen_other_html
 	${MAKE} gen_status
+	${MAKE} gen_top_html
 	${MAKE} entry_index
 	${MAKE} gen_sitemap
 	@echo '=-=-=-=-= IOCCC complete make $@ =-=-=-=-='