Adds linkable section headings to the Learn page.

Author: damncabbage

learn/index.html

@@ -1,6 +1,6 @@
 <section>
 
-  <h2>Learning resources</h2>
+  <h2 id="learning-resources">Learning resources</h2>
 
   <ul class="cards">
     <li>
@@ -31,7 +31,7 @@ <h3>Pursuit</h3>
 
 <section>
 
-  <h2>Tutorials</h2>
+  <h2 id="tutorials">Tutorials</h2>
 
   <ul class="cards">
     <li>
@@ -77,7 +77,7 @@ <h3>Generic Programming</h3>
 </section>
 
 <section>
-  <h2>Articles by Users</h2>
+  <h2 id="articles">Articles by Users</h2>
 
   <ul>
     <li><a href="http://blog.functorial.com/posts/2015-11-20-Thermite.html">Building a Task List Application with Thermite</a> <small>(at <a href="http://blog.functorial.com">blog.functorial.com</a>)</small></li>
@@ -90,9 +90,10 @@ <h2>Articles by Users</h2>
 
 </section>
 
+
 <section>
 
-  <h2>Talks and slides</h2>
+  <h2 id="talks">Talks and Slides</h2>
 
   <ul class="cards">