updated links to the latest version.

updated links from 1.5 to 1.6

src/main/java/org/cryptomator/ui/mainwindow/WelcomeController.java

@@ -16,7 +16,7 @@ import javafx.fxml.FXML;
 public class WelcomeController implements FxController {
 
 	private static final Logger LOG = LoggerFactory.getLogger(WelcomeController.class);
-	private static final String GETTING_STARTED_URI = "https://docs.cryptomator.org/en/1.5/desktop/getting-started/";
+	private static final String GETTING_STARTED_URI = "https://docs.cryptomator.org/en/1.6/desktop/getting-started/";
 
 	private final Application application;
 	private final BooleanBinding noVaultPresent;

src/main/java/org/cryptomator/ui/migration/MigrationImpossibleController.java

@@ -10,7 +10,7 @@ import javafx.stage.Stage;
 
 public class MigrationImpossibleController implements FxController {
 
-	private static final String HELP_URI = "https://docs.cryptomator.org/en/1.5/help/manual-migration/";
+	private static final String HELP_URI = "https://docs.cryptomator.org/en/1.6/help/manual-migration/";
 
 	private final Application application;
 	private final Stage window;

src/main/java/org/cryptomator/ui/wrongfilealert/WrongFileAlertController.java

@@ -15,7 +15,7 @@ import java.io.UncheckedIOException;
 @WrongFileAlertScoped
 public class WrongFileAlertController implements FxController {
 
-	private static final String DOCUMENTATION_URI = "https://docs.cryptomator.org/en/1.5/desktop/accessing-vaults/";
+	private static final String DOCUMENTATION_URI = "https://docs.cryptomator.org/en/1.6/desktop/accessing-vaults/";
 
 	private final Application app;
 	private final Stage window;