fix Grave Digger definition

The old definition was just a repeat of 'Fodder'.

glossary.tex

@@ -1345,8 +1345,8 @@ Set the darker die to `\dicef{6}' and roll the other.  If this roll fails, it fa
   prefix={a\space},
   sort={R1},
   parent={guard},
-  description={are the lowest rung of the \glsentrytext{guard}.
-  About half of these new recruits will survive and gain the next rank},
+  description={have survived a mission, and returned alive.
+  In theory, they should burry the fodder who did not survive the first mission, but in practice, few people leave a body},
 }
 
 \longnewglossaryentry{soldier}{