Revert "Fixed typo introduced in commit ca2b3f11"

This reverts commit a90db964.

htdocs/contrat/class/contrat.class.php

@@ -1940,7 +1940,7 @@ class ContratLigne
 			// Appel des triggers
 			include_once DOL_DOCUMENT_ROOT . '/core/class/interfaces.class.php';
 			$interface=new Interfaces($this->db);
-			$result=$interface->run_triggers('CONTRACT_MODIFY',$this,$user,$langs,$conf);
+			$result=$interface->run_triggers('CONTRACT_LINE_MODIFY',$this,$user,$langs,$conf);
 			if ($result < 0) { $error++; $this->errors=$interface->errors; }
 			// Fin appel triggers
 		}