add witch plural

glossary.tex

@@ -539,6 +539,7 @@
 \newglossaryentry{witch}{
   name={Witch},
   text={witch},
+  plural={witches},
   prefix={a\space},
   parent={alchemy},
   description={simply means any spell-caster, often used as a derogatory term for a dishonoured \glsentrytext{doula}},
@@ -549,8 +550,7 @@
   text={Witchcraft},
   prefix={a\space},
   parent={alchemy},
-  description={is what any \glsentrytext{witch} might do.
-  It emphasises actual magical skill, rather than just putting stuff together with a recipe},
+  description={is real magic, involving skill rather than relying on a recipe},
 }
 
 \newglossaryentry{deep}{