Typos from zstd

facebook/zstd#4068 (comment)

codespell_lib/data/dictionary.txt

@@ -45201,6 +45201,8 @@ pretecting->protecting
 pretection->protection
 pretects->protects
 pretendend->pretended
+pretier->prettier
+pretiest->prettiest
 pretified->prettified
 pretifies->prettifies
 pretify->prettify
@@ -53714,6 +53716,7 @@ sketcking->sketching, skating,
 skilfull->skilful, skillful,
 skillfull->skillful, skilful, skillfully, skilfully,
 skillfullness->skillfulness, skilfulness,
+skipable->skippable
 skipd->skipped
 skipe->skip, Skype,
 skipeable->skippable