Is it correct to put a colon (:) before a website address?

[Hodge]

For example, "...create awareness and a fan base for the product using social media. Start by getting likes for the product's fan page: https://www.facebook.com/example"

You can see that just before giving the website I added a colon; is this a correct use of punctuation?

[Model Pilot]

That is an acceptable use. Here are links you can check:
Exam Grammar Review: Colon
grammar.ccc.commnet.edu/grammar/marks/colon.htm Cached
Use a colon [:] before a list or an explanation that is preceded by a clause that can stand by itself. Think of the colon as a gate, inviting one to go on:
Colon (punctuation) - Wikipedia, the free encyclopedia
en.wikipedia.org/wiki/Colon_(punctuation) Cached

Usage|
History|
IPA Diacritical usage|
Word-medial separator

The colon is a punctuation mark consisting of two equally sized dots centered on the same vertical line. A colon is used to explain or start an enumeration.
Colons | Punctuation Rules - The Blue Book of Grammar and ...
http://www.grammarbook.com/punctuation/colons.asp Cached
The colon is a punctuation mark, visually consisting of two equally sized dots centered on the same vertical line.
Grammar & Punctuation: Proper Use Of The Colon
http://www.essortment.com/grammar-punctu...e-colon... Cached
Frequent misuse of grammar & punctuation is common. Although there are only a few rules governing the use of the colon, this form of punctuation is frequently misused.