Fix comments and command syntax in QemuImg.java

Co-authored-by: Copilot Autofix powered by AI <175728472+Copilot@users.noreply.github.com>

Author: sureshanaparti

plugins/hypervisors/kvm/src/main/java/org/apache/cloudstack/utils/qemu/QemuImg.java

@@ -132,7 +132,7 @@ public enum BitmapOperation {
     public QemuImg(final long timeout, final boolean skipZeroIfSupported, final boolean noCache) throws LibvirtException {
         if (skipZeroIfSupported) {
             final Script s = new Script(_qemuImgPath, timeout);
-            s.add("convert --help");
+            s.add("convert", "--help");
 
             final OutputInterpreter.AllLinesParser parser = new OutputInterpreter.AllLinesParser();
             final String result = s.execute(parser);
@@ -913,7 +913,7 @@ public void setSkipTargetVolumeCreation(boolean skipTargetVolumeCreation) {
     public boolean supportsImageFormat(QemuImg.PhysicalDiskFormat format) {
         // qemu-img create -f $format -o help
         // - prints supported format options with rc=0 on known format, and
-        // - error message with rc=1 on unsupported formet
+        // - error message with rc=1 on unsupported format
         final Script createProbe = new Script(_qemuImgPath, timeout);
         createProbe.add("create", "-f", format.toString(), "-o", "help");
         String createProbeResult = createProbe.execute(new OutputInterpreter.AllLinesParser());