OPENAM-2251: Update agent documentation to correct min rotation size & required permissions

git-svn-id: https://svn.forgerock.org/openam/trunk/openam@4935 0f4defcf-c51a-4c67-9f44-6fb5eba73c5d
Fix invalid xml:id value

git-svn-id: https://svn.forgerock.org/openam/trunk/openam@4937 0f4defcf-c51a-4c67-9f44-6fb5eba73c5d