fix collection field type boolean to bool

Author: romain-filigran

TA-opencti-for-splunk-enterprise/package/default/collections.conf

@@ -3,10 +3,10 @@ field.id                   = string
 field.name                 = string
 field.pattern              = string
 field.pattern_type         = string
-field.revoked              = boolean
+field.revoked              = bool
 field.type                 = string
 field.value                = string
-field.detection            = boolean
+field.detection            = bool
 field.score                = number
 field.main_observable_type = string
 field.confidence           = number