Fix iterator typo from CMake repo

Author: AJIOB

codespell_lib/data/dictionary.txt

@@ -58844,6 +58844,8 @@ teraforming->terraforming
 teraforms->terraforms
 terain->terrain, train,
 terains->terrains, trains,
+terator->iterator
+terators->iterators
 terfform->terraform
 terfformed->terraformed
 terfforming->terraforming