RFR [9] 8132130: some docs cleanup

[alexander stepanov]

Hello,

Could you please review the following fix
http://cr.openjdk.java.net/~avstepan/8132130/webrev.00/
for
https://bugs.openjdk.java.net/browse/JDK-8132130
Just some docs cleanup (fix invalid tags, parameter names, remove 
obsolete <xmp> tags)

Thanks,
Alexander