PDBs are updateable since 1.15 (kubernetes#16738)

Author: srhb

content/en/docs/tasks/run-application/configure-pdb.md

@@ -165,9 +165,7 @@ automatically responds to changes in the number of replicas of the corresponding
 
 ## Create the PDB object
 
-You can create the PDB object with a command like `kubectl apply -f mypdb.yaml`.
-
-You cannot update PDB objects.  They must be deleted and re-created.
+You can create or update the PDB object with a command like `kubectl apply -f mypdb.yaml`.
 
 ## Check the status of the PDB