ony can be also on

See https://github.com/streetcomplete/StreetComplete/commit/9276a4c47a3f496c60a60295885350ae4e431146 for case found in wild

codespell_lib/data/dictionary.txt

diff --git a/codespell_lib/data/dictionary.txt b/codespell_lib/data/dictionary.txt
index adea84c..3582f79 100644
--- a/codespell_lib/data/dictionary.txt
+++ b/codespell_lib/data/dictionary.txt
@@ -20600,7 +20600,7 @@
 onthe->on the
 ontop->on top
 ontrolled->controlled
-ony->only
+ony->only,on,
 onyl->only
 oommits->commits
 opactity->opacity