DOCS-7737: keysInserted and keysDeleted

Signed-off-by: kay <[email protected]>

Author: steveren

source/reference/database-profiler.txt

@@ -51,7 +51,8 @@ example document reflects a find operation:
       "keysExamined" : 2,
       "docsExamined" : 2,
       "cursorExhausted" : true,
-      "keyUpdates" : 0,
+      "keysInserted" : 0,
+      "keysDeleted" : 0,
       "writeConflicts" : 0,
       "numYield" : 0,
       "locks" : {
@@ -296,12 +297,13 @@ operation.
    - Are upserts (that result in an insert)
    - Do not use a modifier operation such as :update:`$set`
 
-.. data:: system.profile.keyUpdates
+.. data:: system.profile.keysInserted
 
-   The number of :doc:`index </indexes>` keys the update changed in
-   the operation. Changing an index key
-   carries a small performance cost because the database must remove the old
-   key and inserts a new key into the B-tree index.
+   The number of index keys inserted for a given write operation.
+
+.. data:: system.profile.keysDeleted
+
+   The number of index keys deleted for a given write operation.
 
 .. data:: system.profile.writeConflicts