Update sip files

Author: jgrocha

python/gui/qgsnewvectorlayerdialog.sip

@@ -65,7 +65,11 @@ Returns the file format for storage
     void on_mRemoveAttributeButton_clicked();
     void on_mFileFormatComboBox_currentIndexChanged( int index );
     void on_mTypeBox_currentIndexChanged( int index );
+
     void showHelp();
+%Docstring
+Open the associated help
+%End
     void nameChanged( const QString & );
     void selectionChanged();
 

python/gui/symbology/qgsstylemanagerdialog.sip

@@ -48,7 +48,14 @@ called when the dialog is going to be closed
 %End
 
     void onClose();
+%Docstring
+Close the dialog
+%End
+
     void showHelp();
+%Docstring
+Open the associated help
+%End
 
     void itemChanged( QStandardItem *item );