memory alpha
Memory Alpha AboutPolicies and guidelines → Follow highlighting conventions

The introductory sentence of an article should include the title word or phrase that the article is about, and this title should be boldfaced (and also italicized if the term is from a language other than English or is the title of a long-form creative work, e.g. a show, a film, a novel, etc.). This highlighting convention makes it easy for the casual reader to identify the topic. Additional terms for the same subject should also be boldfaced when first used.

Don't highlight every single use of the word or phrase, though – just the first one. After the first time the word is seen in bold, the reader will know what the article is about, and so any further highlighting is unnecessary.

Additionally, you should never make the title of the article a link – web pages should not link to themselves (this is considered bad practice for the web in general).