Add doamin->domain

This is a misspelling found in some projects:
https://grep.app/search?q=doamin
diff --git a/codespell_lib/data/dictionary.txt b/codespell_lib/data/dictionary.txt
index 57b663c..d85574a 100644
--- a/codespell_lib/data/dictionary.txt
+++ b/codespell_lib/data/dictionary.txt
@@ -10074,6 +10074,8 @@
 dne->done
 do'nt->don't
 doalog->dialog
+doamin->domain
+doamins->domains
 doas->does
 doble->double
 dobled->doubled