fix: PR remark

Signed-off-by: LE SAULNIER Kevin <[email protected]>

src/main/java/org/gridsuite/modification/server/service/NetworkModificationObserver.java

@@ -21,7 +21,7 @@ public <E extends Throwable> void observe(String name, ModificationType modifica
         createObservation(name, modificationType).observeChecked(runnable);
     }
 
-    protected Observation createObservation(String name, ModificationType modificationType) {
+    private Observation createObservation(String name, ModificationType modificationType) {
         return Observation.createNotStarted(OBSERVATION_PREFIX + name, observationRegistry)
             .lowCardinalityKeyValue(MODIFICATION_TYPE_TAG_NAME, modificationType.name());
     }