fix header

external/integrity/dmp/dmp.md

 ---
 layout: page
-permalink: /external/integrity/checksum/
-shortcut: integrity:checksum
+permalink: /external/integrity/dmp/
+shortcut: integrity:dmp
 redirect_from:
-  - /cards/integrity:checksum
-  - /external/cards/integrity:checksum
-  - /integrity/checksum
-  - /external/external/integrity/checksum/
+  - /cards/integrity:dmp
+  - /external/cards/integrity:dmp
+  - /integrity/dmp
+  - /external/external/integrity/dmp/
 ---
 
 # Data Management Plan