Update link to RGL tutorial (now HTML version)

bin/template.html

@@ -80,7 +80,11 @@ $body$
         <ul class="list-unstyled">
           <li><a href="https://www.youtube.com/watch?v=x1LFbDQhbso">Google Tech Talk</a></li>
           <li><a href="http://cloud.grammaticalframework.org/">GF Cloud</a></li>
-          <li><a href="$rel-root$/doc/tutorial/gf-tutorial.html">Tutorial</a></li>
+          <li>
+            <a href="$rel-root$/doc/tutorial/gf-tutorial.html">Tutorial</a>
+            /
+            <a href="$rel-root$/lib/doc/rgl-tutorial/index.html">RGL Tutorial</a>
+          </li>
           <li><a href="$rel-root$/download"><strong>Download GF</strong></a></li>
         </ul>
       </div>

doc/index.md

@@ -6,6 +6,7 @@ Perhaps you're looking for one of the following:
 
 - [Tutorial](tutorial/gf-tutorial.html). This is a hands-on introduction to grammar writing in GF.
 - [Reference Manual](gf-refman.html). A full-scale reference manual of the GF language.
+- [RGL Tutorial](../lib/doc/rgl-tutorial/index.html)
 - [RGL Synopsis](../lib/doc/synopsis/index.html). Documentation of the Resource Grammar Library, including the syntax API and lexical paradigms for each language.
 - [Shell Reference](gf-shell-reference.html). Describes the commands available in the interactive GF shell.
   Also summarizes how to run GF as a batch compiler.

index.html

@@ -34,7 +34,11 @@
           <img src="http://www.grammaticalframework.org/src/www/P/gf-cloud.png" style="height:30px" class="ml-2" alt="Cloud logo">
         </a>
       </li>
-      <li><a href="doc/tutorial/gf-tutorial.html">Tutorial</a></li>
+      <li>
+        <a href="doc/tutorial/gf-tutorial.html">Tutorial</a>
+        /
+        <a href="lib/doc/rgl-tutorial/index.html">RGL Tutorial</a>
+      </li>
     </ul>
 
     <a href="download/index.html" class="btn btn-primary ml-3">
@@ -363,7 +367,7 @@ least one, it may help you to get a first idea of what GF is.
     <p>
     Adding a language to the resource library takes 3 to 9
     months - contributions
-    are welcome! You can start with the <a href="doc/gf-lrec-2010.pdf">resource grammarian's tutorial</a>.
+    are welcome! You can start with the <a href="lib/doc/rgl-tutorial/index.html">resource grammarian's tutorial</a>.
     </p>
 
   </div><!-- .col-6 -->