fix(skills): use the right datas

sonic-radiance.love/datas/gamedata/skills/attack.lua

@@ -4,7 +4,7 @@
 -- Also serve as a tutoriel for how to create a file attack and choregraphy
 
 return {
-  name = "Attack",  -- unused for this attack, but still usefull sometimes
+  name = "attack",  -- unused for this attack, but still usefull sometimes
   cost = 00,        -- the pp cost of the attack. Will be ignored if it's set
                     -- as character default attack
 

sonic-radiance.love/datas/gamedata/skills/spinattack.lua

@@ -1,6 +1,6 @@
 return {
-  name = "Spin Dash",
-  cost = "05",
+  name = "spinattack",
+  cost = 05,
   target = nil, -- No targeting capacity
   effectArea = {1, 0, "line", 5, true}, -- which area is affected by the attack
   choregraphy = {