[9] Review request for 8157322: Several typos in javadoc

[dmitry markov]

Hello,

Could you review a simple fix for jdk9, please?

    bug: https://bugs.openjdk.java.net/browse/JDK-8157322
    webrev: http://cr.openjdk.java.net/~dmarkov/8157322/webrev.00/

Fixed several typos in client libraries javadoc.

Thanks,
Dmitry