Update API documentation to beta3 rc5

Update from beta3 rc4 to beta3 rc5. The only differences are in the
document history table and the document release date.
diff --git a/docs/html/index.html b/docs/html/index.html
index 6d47087..c212c05 100644
--- a/docs/html/index.html
+++ b/docs/html/index.html
@@ -581,7 +581,7 @@
 </div>
 <div class="section" id="document-history">
 <h2>Document history</h2>
-<table border="1" class="docutils">
+<table border="1" class="longtable docutils">
 <colgroup>
 <col width="11%" />
 <col width="89%" />
@@ -610,10 +610,7 @@
 <td><em>Release 1.0 beta 2</em></td>
 </tr>
 <tr class="row-even"><td>2019-03-12</td>
-<td><ul class="first last simple">
-<li>Specify <code class="docutils literal notranslate"><span class="pre">psa_generator_import_key</span></code> for most key types.</li>
-</ul>
-</td>
+<td>Specify <code class="docutils literal notranslate"><span class="pre">psa_generator_import_key</span></code> for most key types.</td>
 </tr>
 <tr class="row-odd"><td>2019-04-09</td>
 <td><p class="first">Change the value of error codes, and some names, to align
@@ -696,7 +693,10 @@
 </ul>
 </td>
 </tr>
-<tr class="row-odd"><td>2019-05-20</td>
+<tr class="row-odd"><td>2019-05-21</td>
+<td>Convert TLS1.2 KDF descriptions to multistep key derivation.</td>
+</tr>
+<tr class="row-even"><td>2019-05-22</td>
 <td><em>Release 1.0 beta 3</em></td>
 </tr>
 </tbody>