Update policies/attribute_name_collisions.rego

Co-authored-by: Trask Stalnaker <[email protected]>

policies/attribute_name_collisions.rego

@@ -84,7 +84,7 @@ get_or_null(obj, key) = value if {
     not obj[key]
 }
 
-# This list contain exceptions for existing collisions that were introduced unintentionally.
+# This list contains exceptions for existing collisions that were introduced unintentionally.
 # We'll have a way to specify how collision resolution happens in the schema -
 # see phase 2 in https://github.com/open-telemetry/semantic-conventions/issues/1118#issuecomment-2173803006
 # For now we'll exclude existing collisions from the checks.