[gardening] First argument of a classmethod should be named 'cls'

Author: practicalswift

utils/swift_build_support/swift_build_support/targets.py

@@ -200,8 +200,8 @@ def default_stdlib_deployment_targets():
             return [host_target]
 
     @classmethod
-    def get_target_for_name(klass, name):
-        return klass._targets_by_name.get(name)
+    def get_target_for_name(cls, name):
+        return cls._targets_by_name.get(name)
 
 
 def install_prefix():