Add typdef->typedef

diff --git a/codespell_lib/data/dictionary.txt b/codespell_lib/data/dictionary.txt
index 05e6899..30f4a67 100644
--- a/codespell_lib/data/dictionary.txt
+++ b/codespell_lib/data/dictionary.txt
@@ -31448,6 +31448,7 @@
 typcasting->typecasting
 typcasts->typecasts
 typcial->typical
+typdef->typedef
 typechek->typecheck
 typecheking->typechecking
 typesrript->typescript