RFR: 8182611: @extLink taglet ignores text after first newline.

[Kumar Srinivasan]

Hi Jon,

Looks good to me.

Thanks
Kumar

> Please review a simple fix to the regex used to analyze the content of 
> an {@extLink } tag.
>
> The fix is to use DOTALL mode for the regex, and for good measure, to 
> ensure the match is up to the end of the line.
>
> JBS: https://bugs.openjdk.java.net/browse/JDK-8182611
>
> The one-line fix is in the comments for the JBS issue:
> https://bugs.openjdk.java.net/browse/JDK-8182611?focusedCommentId=14094548&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-14094548 
>
>
> -- Jon