Fix non-externalized string warning in Main.execute()

Change-Id: Ib0404daaf485aa6c8dc6ba0b169b46fb800325e4
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>

org.eclipse.jgit.pgm/src/org/eclipse/jgit/pgm/Main.java

@@ -181,7 +181,7 @@ public class Main {
 
 		if (argv.length == 0 || help) {
 			final String ex = clp.printExample(ExampleMode.ALL, CLIText.get().resourceBundle());
-			writer.println("jgit" + ex + " command [ARG ...]"); //$NON-NLS-1$
+			writer.println("jgit" + ex + " command [ARG ...]"); //$NON-NLS-1$ //$NON-NLS-2$
 			if (help) {
 				writer.println();
 				clp.printUsage(writer, CLIText.get().resourceBundle());