Find a possible problem in wiki content

[孙志禹]

In the link 
https://cwiki.apache.org/confluence/display/Hive/LanguageManual+Select where 
there is an explanation of the function regexp_extract (in the picture below), 
there is a reference to the html docs/api/java/util/regex/Matcher.html which 
can not be opened directly. It seems something wrong, and if it isn't, I want 
to ask for the right way to open that html.Thanks.