Add spelling correction for separately.

Author: cfi-gb

codespell_lib/data/dictionary.txt

@@ -52335,6 +52335,8 @@ seplicurally->sepulchrally
 seplicuraly->sepulchrally
 seplicurlly->sepulchrally
 seporate->separate
+sepparatelly->separately
+sepparately->separately
 sepparation->separation
 sepparations->separations
 sepperate->separate