When Hubpages has identified a broken link in one of your hubs, it means that the link isn't valid, which brings less value to your article and could be damaging, which is why Hubpages identifies broken links. To fix the problem, go to the hub, click on edit, scan the hub looking for a "yellow" highlight. Once you found it, then edit the capsule where it is located and then move your mouse to the location where the link is suppose to be. If it is a word? Then Click and drag your mouse over the word to highlight it in blue. Then click on the "chain-link" icon at the top of the capsule. This will bring up a pop up window, which you can enter in the URL in the top white box. Click save. Then click save on the capsule you were editing. At this time, it should be fixed. Then click on the "done editing" at the top of the hub and you are finished.