updated the link with markdown link syntax
updated the link in the comment so it helps with generated docs
@@ -16,7 +16,7 @@ pub static COLUMNS: &str = "COLUMNS";
pub static TIME_STYLE: &str = "TIME_STYLE";
/// Environment variable used to disable colors.
-/// See: https://no-color.org/
+/// See: <https://no-color.org/>
pub static NO_COLOR: &str = "NO_COLOR";
// exa-specific variables
