Merge pull request #14 from HS6986/fix/HS6986/MorphMaxVNotZ

Correct the maximum state in morphological data from Z to V

Author: bqminh

doc/Substitution-Models.md

@@ -358,7 +358,7 @@ Binary and morphological models
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 <div class="hline"></div>
 
-The binary alignments should contain state `0` and `1`, whereas for morphological data, the valid states are `0` to `9` and `A` to `Z`.
+The binary alignments should contain state `0` and `1`, whereas for morphological data, the valid states are `0` to `9` and `A` to `V`.
 
 | Model      | Explanation |
 |------------|------------------------------------------------------------------------|