Move spell effects to separate page

Makefile

@@ -1,6 +1,6 @@
 %.html: %.md
 	pandoc $< -f markdown -t html -s -o $@
 
-ttrpg: perks.html spelllist.html test.html main.html creatures.html magical_items.html calc.html
+ttrpg: perks.html spelllist.html test.html main.html creatures.html magical_items.html calc.html effect.html
 
 all: ttrpg