docs: use authenticated REST API URL in example

Since you have to be an authenticated user to use this plugin, it makes
sense to use the /a/ prefix in the examples.

Change-Id: I3aa79763db71b49bb6bc585b9fe857c13d47db30

src/main/resources/Documentation/rest-api-events.md

diff --git a/src/main/resources/Documentation/rest-api-events.md b/src/main/resources/Documentation/rest-api-events.md
index a61b1c7..b9b5a4f 100644
--- a/src/main/resources/Documentation/rest-api-events.md
+++ b/src/main/resources/Documentation/rest-api-events.md
@@ -64,9 +64,8 @@
 
 Query the change events which happened between 2014-09-01 and 2014-10-01
 
->    curl --user joe:secret http://host:port/plugins/@PLUGIN@/events/?t1=2014-09-01;t2=2014-10-01
+>    curl --user joe:secret http://host:port/a/plugins/@PLUGIN@/events/?t1=2014-09-01;t2=2014-10-01
 
 Query the change events which happened between 2014-10-29 10:00:00 and 2014-10-29 11:00:00
 
->    curl --user joe:secret "http://host:port/plugins/@PLUGIN@/events/?t1=2014-10-29%2010%3A00%3A00.000;t2=2014-10-29%2011%3A00%3A00"
-
+>    curl --user joe:secret "http://host:port/a/plugins/@PLUGIN@/events/?t1=2014-10-29%2010%3A00%3A00.000;t2=2014-10-29%2011%3A00%3A00"