docs(site): fix favicon

Author: fhussonnois

docs/hugo.toml

@@ -85,7 +85,7 @@ copyright = "The Jikkou Authors"
 privacy_policy = ""
 
 # First one is picked as the Twitter card image if not set on page.
-# images = ["images/project-illustration.png"]
+images = ["images/jikkou-no-title-logo-450px.png"]
 
 # Menu title if your navbar has a versions selector to access old versions of your site.
 # This menu appears only if you have at least one [params.versions] set.