[fix] fix plugins_manager table model translation

src/sakia/gui/dialogs/plugins_manager/table_model.py

@@ -5,7 +5,7 @@ from PyQt5.QtCore import (
     QSortFilterProxyModel,
     QModelIndex,
     QT_TRANSLATE_NOOP,
-)
+    QCoreApplication)
 from sakia.data.entities import Plugin
 
 
@@ -118,7 +118,7 @@ class PluginsTableModel(QAbstractTableModel):
 
     def headerData(self, section, orientation, role):
         if orientation == Qt.Horizontal and role == Qt.DisplayRole:
-            return PluginsTableModel.columns_headers[section]
+            return QCoreApplication.translate("PluginsTableModel", PluginsTableModel.columns_headers[section])
 
     def data(self, index, role):
         row = index.row()