samples(cloud-sql/mysql): Fix README to refer to MySQL instead of Postgres (#1691)
samples(cloud-sql/mysql): Fix README to refer to MySQL instead of Postgres (#1691)


GoogleCloudPlatform/dotnet-docs-samples,GoogleCloudPlatform/dotnet-docs-samples,GoogleCloudPlatform/dotnet-docs-samples,GoogleCloudPlatform/dotnet-docs-samples