Added take a backup before you update

jantje · jantje · commit fe5ff3d043b3 · 2017-11-21T00:15:08.000+01:00
The update from 4.1 to 4.2 failed on my system
diff --git a/website/WebContent/fragments/how_to/update.md b/website/WebContent/fragments/how_to/update.md
@@ -1,6 +1,7 @@
 How to update your plugin
 =========================
 **When you update the plugin you also have to update the workspace.**
+**Take a backup before you do the update.**
 
 How to do a major update  (V2.x to V3.y)
 ==================
