fix line-breaks

Author: janesser

src/test/java/software/sham/ssh/MockSshShellTest.java

@@ -66,7 +66,7 @@ public void differentOutputForDifferentInput() throws IOException {
 
 	@Test
 	public void delayedOutput() throws IOException {
-		server.respondTo("delayedResponder").withOutput("Starting...\n").withDelay(500L).withOutput("Completed.");
+		server.respondTo("delayedResponder").withOutput("Starting..."+System.lineSeparator()).withDelay(500L).withOutput("Completed.");
 
 		runInShell(shell -> {
 			assertEquals("Starting..." + System.lineSeparator() + "Completed.",