docs(aio): update 2018 events (#19706)

update ac 2017 dates

PR Close #19706

aio/content/marketing/events.html

@@ -13,18 +13,6 @@
     </tr>
     </thead>
     <tbody>
-    <!-- ngJapan -->
-    <tr>
-      <th><a href="http://ngjapan.org/" title="ng-Japan">ng-Japan</a></th>
-      <td>Tokyo, Japan</td>
-      <td>June 17, 2017</td>
-    </tr>
-    <!-- AngularMix -->
-    <tr>
-      <th><a href="https://angularmix.com/" title="AngularMix">AngularMix</a></th>
-      <td>Universal Studios, Orlando, Florida</td>
-      <td>October 8, 2017</td>
-    </tr>
     <!-- ReactiveConf -->
     <tr>
       <th><a href="https://reactiveconf.com/" title="ReactiveConf">ReactiveConf</a></th>
@@ -35,7 +23,7 @@
     <tr>
       <th><a href="http://angularconnect.com" title="AngularConnect">AngularConnect</a></th>
       <td>London, United Kingdom</td>
-      <td>November 07, 2017</td>
+      <td>November 7-8, 2017</td>
     </tr>
     <!-- ngAtlanta-->
     <tr>
@@ -43,11 +31,30 @@
       <td>Atlanta, Georgia</td>
       <td>January 30, 2018</td>
     </tr>
+    <!-- ngVikings-->
     <tr>
       <th><a href="https://ngvikings.org/" title="ngVikings">ngVikings</a></th>
       <td>Helsinki, Finland</td>
       <td>March 1-2, 2018</td>
     </tr>
+    <!-- ngconf 2018-->
+    <tr>
+      <th><a href="https://www.ng-conf.org/" title="ng-conf">ng-conf</a></th>
+      <td>Salt Lake City, UT</td>
+      <td>April 18-20, 2018</td>
+    </tr>
+    <!-- WeRDevs-->
+    <tr>
+      <th><a href="https://www.wearedevelopers.com/" title="WeAreDevs">WeAreDevelopers</a></th>
+      <td>Vienna</td>
+      <td>May 16-18, 2018</td>
+    </tr>
+    <!-- AngularConnect-->
+    <tr>
+      <th><a href="http://angularconnect.com" title="AngularConnect">AngularConnect</a></th>
+      <td>London, United Kingdom</td>
+      <td>November 5-7, 2018</td>
+    </tr>
     </tbody>
   </table>
 </article>