update elements and fix some bugs

lib/src/prism/components/prism-ocaml.js

+Prism.languages.ocaml = {
+        'comment': /\(\*[\s\S]*?\*\)/,
+        'string': [
+                /"(?:\\.|[^\\\r\n"])*"/,
+                /(['`])(?:\\(?:\d+|x[\da-f]+|.)|(?!\1)[^\\\r\n])\1/i
+        ],
+        'number': /\b-?(?:0x[\da-f][\da-f_]+|(?:0[bo])?\d[\d_]*\.?[\d_]*(?:e[+-]?[\d_]+)?)/i,
+        'type': {
+                pattern: /\B['`][a-z\d_]*/i,
+                alias: 'variable'
+        },
+        'directive': {
+                pattern: /\B#[a-z\d_]+/i,
+                alias: 'function'
+        },
+        'keyword': /\b(?:as|assert|begin|class|constraint|do|done|downto|else|end|exception|external|for|fun|function|functor|if|in|include|inherit|initializer|lazy|let|match|method|module|mutable|new|object|of|open|prefix|private|rec|then|sig|struct|to|try|type|val|value|virtual|where|while|with)\b/,
+        'boolean': /\b(?:false|true)\b/,
+        // Custom operators are allowed
+        'operator': /:=|[=<>@^|&+\-*\/$%!?~][!$%&\*+\-.\/:<=>?@^|~]*|\b(?:and|asr|land|lor|lxor|lsl|lsr|mod|nor|or)\b/,
+        'punctuation': /[(){}\[\]|_.,:;]/
+};