Fix typo

sources/editor/qetelementeditor.cpp

@@ -1145,7 +1145,7 @@ void QETElementEditor::slot_reload()
 /**
  * @brief QETElementEditor::slot_save
  * Save the current editing element.
- * If the filepath or location is unknow, use save_as instead
+ * If the filepath or location is unknown, use save_as instead
  * @return true if save with success
  */
 bool QETElementEditor::slot_save()

sources/qetgraphicsitem/element.cpp

@@ -1407,7 +1407,7 @@ QString Element::linkTypeToString() const
         case Terminale:
             return "Terminale";
         default:
-            return "Unknow";
+            return "Unknown";
     }
 }