english correction

src/fr/inra/pappso/xtandempipeline/ui/swt/Main_Windows.java

@@ -369,7 +369,7 @@ public class Main_Windows {
 		t2.setText("" + conf.get_peptide_number());
 		t2.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, false, false));
 		Label l3 = new Label(composite, SWT.NONE);
-		l3.setText("Number of peptide per protein");
+		l3.setText("Number of peptides per protein");
 		l3.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
 
 		Text t4 = new Text(composite, SWT.SINGLE);