RFR(XXS): 8242844: clean some error typos and log format

[Denghui Dong]

Hi team,

Could you please review this small and trivial patch?
Just clean some typos and log format I found.

For example:
in jdk.jfr.consumer.RecordedObject#getDuration(java.lang.String)
        throw newIllegalArgumentException(name, "java,time.Instant"); 

"java,time.Duration" should be "java.time.Duration"

JBS: https://bugs.openjdk.java.net/browse/JDK-8242844
webrev: http://cr.openjdk.java.net/~ddong/8242844/webrev.00/

Thanks,
Denghui Dong