Remove dlp references

Author: sethvargo

secretmanager/README.md

@@ -1,9 +1,9 @@
-# Google DLP PHP Sample Application
+# Google Secret Manager PHP Sample Application
 
 [![Open in Cloud Shell][shell_img]][shell_link]
 
 [shell_img]: http://gstatic.com/cloudssh/images/open-btn.svg
-[shell_link]: https://console.cloud.google.com/cloudshell/open?git_repo=https://github.com/googlecloudplatform/php-docs-samples&page=editor&working_dir=dlp
+[shell_link]: https://console.cloud.google.com/cloudshell/open?git_repo=https://github.com/googlecloudplatform/php-docs-samples&page=editor&working_dir=secretmanager
 
 ## Description