Add Token.orth and Token.orth_ description in doc

website/docs/api/token.jade

@@ -67,6 +67,16 @@ p An individual token — i.e. a word, punctuation symbol, whitespace, etc.
         +cell unicode
         +cell Base form of the word, with no inflectional suffixes.
 
+    +row
+        +cell #[code orth]
+        +cell int
+        +cell word's string.
+
+    +row
+        +cell #[code orth_]
+        +cell unicode
+        +cell word's string.
+
     +row
         +cell #[code lower]
         +cell int