Fix Cloud Shell link in Fixity example
Fix Cloud Shell link in Fixity example

GoogleCloudPlatform/professional-services,CloudVLab/professional-services,GoogleCloudPlatform/professional-services,CloudVLab/professional-services,GoogleCloudPlatform/professional-services,GoogleCloudPlatform/professional-services,CloudVLab/professional-services,GoogleCloudPlatform/professional-services,GoogleCloudPlatform/professional-services,CloudVLab/professional-services,CloudVLab/professional-services,GoogleCloudPlatform/professional-services,CloudVLab/professional-services,CloudVLab/professional-services,GoogleCloudPlatform/professional-services,GoogleCloudPlatform/professional-services