Syntax highlighting incorrect in tutorial

[patrick-nicodemus]

Several code samples in the tutorial are receiving the "comment" styling where they should not be.

• In the first code sample here the second 50 is incorrectly highlighted
• In # 6.28;; the .28 ;; is highlighted incorrectly
• In the code sample [https://ocaml.org/docs/tour-of-ocaml#expressions-and-definitions] 50 * 50, the string * 50 is highlighted as a comment
• in # 9 :: u;; the :: u;; is highlighted incorrectly
• in # 2 * if "hello" = "world" then 3 else 5;; everything after the 2 is highlighted incorrectly
• in # 2.0 +. 2.0;;, .0 +. 2.0;; is highlighted incorrectly
• in # 1 + 2.5;;, + 2.5;; is highlighted incorrectly (same with 1 +. 2.5)
• # 1 :: [2; 3; 4];;
• # 10 / 0;;

[cuihtlauac]

Thanks @patrick-nicodemus, this goes along issue #2870

Highlighting is done by package Hilite. Can you create a bug there please?