Fix few checkstyle warnings.

Author: Aleksi Salmela

src/main/java/fi/helsinki/cs/tmc/cli/command/DownloadExercisesCommand.java

@@ -81,19 +81,19 @@ public void run(CommandLine args, Io io) {
         if (course.getExercises().isEmpty()) {
             io.println("The '" + courseName + "' course doesn't have any exercises.");
         } else {
-            io.println("The '" + courseName + "' course has " +
-                    course.getExercises().size() + " exercises");
+            io.println("The '" + courseName + "' course has "
+                    + course.getExercises().size() + " exercises");
 
             int failedCount = (filtered.size() - exercises.size());
             if (failedCount > 0) {
-                io.println("  from which " +
-                        exercises.size() + " exercises were succesfully downloaded");
+                io.println("  from which "
+                        + exercises.size() + " exercises were succesfully downloaded");
                 io.println(Color.colorString("  and of which " + failedCount + " failed.",
                         Color.AnsiColor.ANSI_RED));
                 //TODO we could print the names of the not downloaded exercises here
             } else {
-                io.println("  from which " +
-                        exercises.size() + " exercises were downloaded.");
+                io.println("  from which "
+                        + exercises.size() + " exercises were downloaded.");
             }
             io.println("Use -a flag to download also your completed exercises.");
         }

src/main/java/fi/helsinki/cs/tmc/cli/io/TerminalIo.java

@@ -34,7 +34,7 @@ public String readPassword(String prompt) {
                 logger.warn("Password could not be read.", e);
             }
         } else {
-           logger.warn("Failed to read password due to System.console()");
+            logger.warn("Failed to read password due to System.console()");
         }
         println("Unable to read password securely. Reading password in cleartext.");
         println("Press Ctrl+C to abort");