link fixed with hard return and minor edits

Hi Rich,

In the Dev guide, there was a formatting error that included text within a link. You can see the problem here (at the bottom of the "Settings" page):

https://www.liferay.com/documentation/liferay-portal/6.1/development/-/ai/settin-4

I updated the link to point to that exact section. Also, I gave a hard return to the text. The problem is now fixed with this commit.