I have long wondered how you can avoid long sections of white space in text when you include a URL in a sentence.    Word views the URL as one word and moves it to the next line, leaving the preceding line with too much blank space.   In the past, I have tried to fix the problem with a manual line break, but nothing ever worked very well.   Eugene Volokh has a couple of suggestions to fix this.  He explains it well so read about it here.