Docs update

[mlushpenko]

Hi, just to improve what you have already written, the command must include the password to the trust store and full path to the keystore. I updated jenkins_slave.xml with the following line:

<arguments>-Xrs -Djavax.net.ssl.trustStorePassword=jenkins -Djavax.net.ssl.trustStore=C:\jenkins\jenkins -jar "%BASE%\slave.jar" -jnlpUrl https://jenkins/computer/windows-slave/slave-agent.jnlp -secret d9347aed6f261a55822ecb6992ca717asdasd8a8s7da8s7d536bffdc64440fe</arguments>

The last thing I had trouble with was that keystore file wasn't accessible for Jenkins slave, so I had to copy it to the Jenkins slave folder.