Give an example of an API token in Documentation

This will help users to find the correct token.

Change-Id: I183a2296c9f921b4e949890d84aab319d44d1074
diff --git a/src/main/resources/Documentation/config-connectivity.md b/src/main/resources/Documentation/config-connectivity.md
index 92b0c36..84bc67f 100644
--- a/src/main/resources/Documentation/config-connectivity.md
+++ b/src/main/resources/Documentation/config-connectivity.md
@@ -11,10 +11,12 @@
 ```
 [@PLUGIN@]
   url = http://my.phabricator.instance.example.org
-  token = TOKEN_FOR_ABOVE_USERNAME
+  token = TOKEN_AS_DESCRIBED_BELOW
 ```
 
 You can get your token by going to http://my.phabricator.instance.example.org/conduit/login/
+Tokens typically start in `cli-` and are followed by letters and digits, as
+for example `cli-zoenau772kfsrofqxt7cn55q4rng`.
 
 [Back to @PLUGIN@ documentation index][index]