adjust DOCROOT_URL_SLASH to just be /temp-test-ioccc/

Testing the value of using:

```sh
DOCROOT_URL_SLASH="/temp-test-ioccc/"
```

in case doing "../../" isn't liked by GitHub.

2020/ferguson1/index.html

@@ -15,7 +15,7 @@
 <!-- START: this line starts content from: inc/head.default.html -->
 
 <head>
-<link rel="stylesheet" href="/ioccc.css">
+<link rel="stylesheet" href="/temp-test-ioccc/ioccc.css">
 <meta charset="utf-8">
 <meta name="viewport" content="width=device-width, initial-scale=1.0, user-scalable=yes">
 <title>2020/ferguson1</title>
@@ -32,7 +32,7 @@
 <!-- START: this line starts content from: inc/header.default.html -->
 
 <div class="header">
-  <img src="/png/ioccc.png" alt="IOCCC image by Matt Zucker" width=300 height=110>
+  <img src="/temp-test-ioccc/png/ioccc.png" alt="IOCCC image by Matt Zucker" width=300 height=110>
   <h1>The International Obfuscated C Code Contest</h1>
   <h2>2020/ferguson1</h2>
 </div>
@@ -65,28 +65,28 @@
     </div>
     <hr>
     <div class="sidenav">
-      <a href="/index.html">IOCCC Home</a>
-      <a href="/years.html">Winning Entries</a>
-      <a href="/winners.html">People who have won</a>
+      <a href="/temp-test-ioccc/index.html">IOCCC Home</a>
+      <a href="/temp-test-ioccc/years.html">Winning Entries</a>
+      <a href="/temp-test-ioccc/winners.html">People who have won</a>
     </div>
     <hr>
     <div class="sidenav">
-      <a href="/news.html">IOCCC News</a>
-      <a href="/faq.html#submit">How to enter the IOCCC</a>
-      <a href="/faq.html">FAQ</a>
+      <a href="/temp-test-ioccc/news.html">IOCCC News</a>
+      <a href="/temp-test-ioccc/faq.html#submit">How to enter the IOCCC</a>
+      <a href="/temp-test-ioccc/faq.html">FAQ</a>
     </div>
     <hr>
     <div class="sidenav">
-      <a href="/bugs.html">Bugs &amp; (mis)features</a>
-      <a href="/faq.html#fix_a_winner">Fixing IOCCC winners</a>
-      <a href="/faq.html#fix_web_site">Fixing the web site</a>
-      <a href="/faq.html#fix_author">Fixing winner info</a>
-      <a href="/thanks-for-help.html">Thanks for the help</a>
+      <a href="/temp-test-ioccc/bugs.html">Bugs &amp; (mis)features</a>
+      <a href="/temp-test-ioccc/faq.html#fix_a_winner">Fixing IOCCC winners</a>
+      <a href="/temp-test-ioccc/faq.html#fix_web_site">Fixing the web site</a>
+      <a href="/temp-test-ioccc/faq.html#fix_author">Fixing winner info</a>
+      <a href="/temp-test-ioccc/thanks-for-help.html">Thanks for the help</a>
     </div>
     <hr>
     <div class="sidenav">
-      <a href="/judges.html">The IOCCC Judges</a>
-      <a href="/contact.html">Contacting the IOCCC</a>
+      <a href="/temp-test-ioccc/judges.html">The IOCCC Judges</a>
+      <a href="/temp-test-ioccc/contact.html">Contacting the IOCCC</a>
     </div>
     <hr>
     <div class="sidenav">
@@ -112,8 +112,10 @@
 <!-- START: this line starts content generated by: bin/gen-author.sh -->
 
 <p><a name="author"><strong>Author:</strong></a></p>
-<p>Name: <a href="/winners.html#Cody_Boone_Ferguson">Cody Boone
-Ferguson</a><br> Location: <a href="/location.html#US">US</a></p>
+<p>Name: <a
+href="/temp-test-ioccc/winners.html#Cody_Boone_Ferguson">Cody Boone
+Ferguson</a><br> Location: <a
+href="/temp-test-ioccc/location.html#US">US</a></p>
 
 <!-- END: next line ends content generated by: bin/gen-author.sh -->
 <h2 id="to-build">To build:</h2>

bin/gen-author.sh

@@ -74,7 +74,7 @@ export PANDOC_WRAPPER="bin/pandoc_wrapper.sh"
 export PANDOC_WRAPPER_OPTSTR="-f markdown -t html --fail-if-warnings=true"
 export REPO_URL="https://github.com/ioccc-src/temp-test-ioccc"
 export TOP_URL="https://ioccc-src.github.io/temp-test-ioccc"
-export DOCROOT_URL_SLASH="/"
+export DOCROOT_URL_SLASH="/temp-test-ioccc/"
 
 # set usage message
 #

bin/subst.winner-index.sh

@@ -111,7 +111,7 @@ $NAME version: $VERSION"
 #
 export NOOP=
 export DO_NOT_PROCESS=
-export DOCROOT_URL_SLASH="/"
+export DOCROOT_URL_SLASH="/temp-test-ioccc/"
 
 # parse command line
 #