pkg/debug: Update comment
We already lowercase before comparing.
Fixes
@@ -7,7 +7,7 @@ const Name = "o-o.debug."
// IsDebug checks if name is a debugging name, i.e. starts with o-o.debug.
// it returns the empty string if it is not a debug message, otherwise it will return the
-// name with o-o.debug. stripped off. Must be called with name lowercased.
+// name with o-o.debug. stripped off. Name will be lowercased before comparing.
func IsDebug(name string) string {
if len(name) == len(Name) {
return ""
