fix: Use to the proper config names in warning messages (#12114)

Co-authored-by: Callum Styan <callumstyan@gmail.com>

pkg/validation/validate.go

@@ -62,9 +62,9 @@ const (
 	DuplicateLabelNames                  = "duplicate_label_names"
 	DuplicateLabelNamesErrorMsg          = "stream '%s' has duplicate label name: '%s'"
 	DisallowedStructuredMetadata         = "disallowed_structured_metadata"
-	DisallowedStructuredMetadataErrorMsg = "stream '%s' includes structured metadata, but this feature is disallowed. Please see `limits_config.structured_metadata` or contact your Loki administrator to enable it."
+	DisallowedStructuredMetadataErrorMsg = "stream '%s' includes structured metadata, but this feature is disallowed. Please see `limits_config.allow_structured_metadata` or contact your Loki administrator to enable it."
 	StructuredMetadataTooLarge           = "structured_metadata_too_large"
-	StructuredMetadataTooLargeErrorMsg   = "stream '%s' has structured metadata too large: '%d' bytes, limit: '%d' bytes. Please see `limits_config.structured_metadata_max_size` or contact your Loki administrator to increase it."
+	StructuredMetadataTooLargeErrorMsg   = "stream '%s' has structured metadata too large: '%d' bytes, limit: '%d' bytes. Please see `limits_config.max_structured_metadata_size` or contact your Loki administrator to increase it."
 	StructuredMetadataTooMany            = "structured_metadata_too_many"
 	StructuredMetadataTooManyErrorMsg    = "stream '%s' has too many structured metadata labels: '%d', limit: '%d'. Please see `limits_config.max_structured_metadata_entries_count` or contact your Loki administrator to increase it."
 )