Make mypy happy.

Author: Laren-AWS

aws_doc_sdk_examples_tools/yaml_mapper.py

@@ -212,7 +212,7 @@ def person_from_yaml(
     if yaml is None:
         return None
     name = yaml.get("name")
-    email = yaml.get("email")
+    email = yaml.get("email", "")
 
     if name is None:
         return metadata_errors.PersonMissingName(email=email)