give grummel lightning symbol

glossary.tex

@@ -1586,9 +1586,9 @@ Set the darker die to `\dicef{6}' and roll the other.  If this roll fails, it fa
 \longnewglossaryentry{grummel}{
   name={Grummel},
   category={god},
-  symbol={\Sextile},
+  symbol={\lightning},
   parent={ainumar},
-  description={waits till \glsentrysymbol{fenestra} approaches the \glsentrysymbol{ainumar} and begins to shake it, causing earthquakes, volcanic erruptions, and tidal waves.
+  description={waits till \glsentrytext{fenestra} approaches the \glsentrytext{ainumar} and begins to shake it, causing earthquakes, volcanic erruptions, and tidal waves.
   These mark the end of each \glsentrytext{cycle}, and people call them Grummel's \glsentrytext{storm}},
 }