shorten text on tiles

diff --git a/tsmeetup201809/index.html b/tsmeetup201809/index.html
index 6767f7cf6848de4348b8e2a185cf4d8f8074798a..d49d482c55fad53c390d028c2d0e9b3fa0cb13fc 100755 (executable)
--- a/tsmeetup201809/index.html
+++ b/tsmeetup201809/index.html
@@ -110,10 +110,8 @@
  alt="VR Headset user with Mozilla logos">
 <ul>
   <li>The world is flat (in two ways)!</li>
-  <li><mark>Ground tiles</mark> using
-    <a href="https://en.wikipedia.org/wiki/Mercator_projection">Mercator projection</a>,
-    "Mapnik" rendering from <a href="https://www.openstreetmap.org/">OSM</a>
-    via KaiRo's tile caching server</li>
+  <li>Ground: <mark>image tiles</mark> as known from
+    <a href="https://www.openstreetmap.org/">OSM</a></li>
   <li><mark>Trees</mark> and <mark>buildings</mark>: live OSM data via
     <a href="https://wiki.openstreetmap.org/wiki/Overpass_API">Overpass API</a></li>
   <li>Camera/controller setup to support multiple devices for navigating the scene</li>