RFR: (T) 8241144 Javadoc is not generated for new module jdk.nio.mapmode

[Andrew Dinn]

Could I please have a review for this trivial fix to the module make
file which ensures that javadoc is generated for new module
jdk.nio.mapmode created as part of the implementation of JEP 352. The
original patch added the module to the BOOT_MODULES list but was not to
the DOCS_MODULES list.

JIRA:   https://bugs.openjdk.java.net/browse/JDK-8241144
webrev: http://cr.openjdk.java.net/~adinn/8241144/webrev

Testing:

Built image and compiled + ran Hello World.

Built make target docs-jdk-api-javadoc and checked module
jdk.nio.mapmode was included in output

regards,


Andrew Dinn
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Senior Principal Software Engineer
Red Hat UK Ltd
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