fix spec yaml (DataDog#23094)

Author: san-jos

cloudera/assets/configuration/spec.yaml

@@ -20,7 +20,6 @@ files:
       fleet_configurable: true
       secret: true
       required: true
-      secret: true
       value:
         type: string
     - template: init_config/default

mongo/assets/configuration/spec.yaml

@@ -114,11 +114,6 @@ files:
         - name: enabled
           description: Enable database autodiscovery.
           fleet_configurable: true
-          fleet_configurable: true
-          fleet_configurable: true
-          fleet_configurable: true
-          fleet_configurable: true
-          fleet_configurable: true
           value:
             type: boolean
             example: false
@@ -174,8 +169,6 @@ files:
             The maximum number of collections to collect metrics from per database.
             Defaults to 100.
           fleet_configurable: true
-          fleet_configurable: true
-          fleet_configurable: true
           value:
             type: integer
             example: 100