Fix OAC issue in langtools docs

Analyzing 242 files
                       accessib missing (total)
com.sun.javadoc 1 62 63
com.sun.source.doctree 0 78 78
com.sun.source.tree 0 179 179
com.sun.source.util 0 115 115
javax.lang.model.util 0 6 6
(total) 1 440 441