Prevent the highlight of Javadoc

By default, comments should keep their basic highlight with Odyssey.
Therefore, the plugin introduces the variable `g:java_ignore_javadoc`
which prevent the highlight of the Javadoc.

colors/odyssey.vim

@@ -283,6 +283,8 @@ call s:l(         'javaOdysseyLombok',       'Statement')
 call s:l(      'javaOdysseyEnumValue',        'Constant')
 call s:l('javaOdysseyEnumConstructor',        'Constant')
 
+let g:java_ignore_javadoc = 1
+
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