Renaming Delta Operations as per RFC 9144

RFC 9144 recommends naming convention for operations that can be performed on any datastore.
The recommended names are:
- create
- remove
- replace
Whereas in CPS Delta feature these operaitions were named:
- add
- remove
- update
So, "add" and "update" operations have been changed to "create" and "replace" respectively.

Issue-ID: CPS-2393
Change-Id: Ie39f5f8ccc91e96cf484ca7fbc833a6be8758054
Signed-off-by: Arpit Singh <as00745003@techmahindra.com>
diff --git a/cps-rest/docs/openapi/components.yml b/cps-rest/docs/openapi/components.yml
index 850ecb6..25ef6a4 100644
--- a/cps-rest/docs/openapi/components.yml
+++ b/cps-rest/docs/openapi/components.yml
@@ -141,17 +141,17 @@
                   name: kids
     deltaReportSample:
       value:
-        - action: "ADD"
+        - action: "create"
           xpath: "/bookstore/categories/[@code=3]"
           target-data:
             code: 3,
             name: "kidz"
-        - action: "REMOVE"
+        - action: "remove"
           xpath: "/bookstore/categories/[@code=1]"
           source-data:
             code: 1,
             name: "Fiction"
-        - action: "UPDATE"
+        - action: "replace"
           xpath: "/bookstore/categories/[@code=2]"
           source-data:
             name: "Funny"