add PDF version of JAMS Manual

The JAMS Manual contains:
* JAMS User Guide
* JAMS Admin Guide

Change-Id: I90fb8b05d06e1d99536adef52195231ae9ee6a02

jams/index.md

@@ -6,6 +6,8 @@ The JAMS manual contains user guides for the Jami Account Management Server.
 The Jami Account Management Server (JAMS) enables Jami to be easily deployed in any enterprise and allows users to connect using their centralized credentials and create local accounts.
 JAMS allows all enterprises to manage their own Jami community while taking advantage of Jami's distributed network architecture.
 
+For a downloadable version of the JAMS manual (PDF), click [here](jams-manual.pdf)
+
 ## Additional guides
 
 ```{toctree}