feat: highlight undercurl only for spell groups

fixes #103

Author: scottmckendry

lua/cyberdream/extensions/base.lua

@@ -53,10 +53,10 @@ function M.get(opts, t)
         IncSearch = { fg = t.bgAlt, bg = t.cyan },
         CurSearch = { fg = t.bgAlt, bg = t.cyan },
         SpecialKey = { fg = t.grey },
-        SpellBad = { fg = t.red, undercurl = true },
-        SpellCap = { fg = t.yellow, undercurl = true },
-        SpellLocal = { fg = t.blue, undercurl = true },
-        SpellRare = { fg = t.purple, undercurl = true },
+        SpellBad = { sp = t.red, undercurl = true },
+        SpellCap = { sp = t.yellow, undercurl = true },
+        SpellLocal = { sp = t.blue, undercurl = true },
+        SpellRare = { sp = t.purple, undercurl = true },
         StatusLine = { fg = t.fg, bg = t.bg },
         StatusLineNC = { fg = t.grey, bg = t.bg },
         TabLine = { fg = t.grey, bg = t.bg },