You might find this link helpful http://grammar.quickanddirtytips.com/formatting-URLs-in-text.aspx

I terminate a sentence with a period,if I am writing for print. However, for online documentation, I would rephrase the sentence.

You might find Grammar Girl's advice helpful:

... unless you can control exactly how the address will be rendered, it's best to leave off the terminal punctuation or rewrite the sentence so the URL doesn't come at the end.

I terminate a sentence with a period if I am writing for print. However, for online documentation, I would rephrase the sentence.