Update deprecated comment

Author: ypeckstadt

data-loader/cli/src/main/java/com/scalar/db/dataloader/cli/command/dataexport/ExportCommandOptions.java

@@ -82,13 +82,15 @@ public class ExportCommandOptions {
           "Maximum number of threads to use for parallel processing (default: number of available processors)")
   protected Integer maxThreads;
 
-  // Deprecated option - kept for backward compatibility
+  /**
+   * @deprecated As of release 3.6.2. Will be removed in release 4.0.0. Use --max-threads instead
+   */
+  @Deprecated
   @CommandLine.Option(
       names = {DEPRECATED_THREADS_OPTION},
       paramLabel = "<THREADS>",
       description = "Deprecated: Use --max-threads instead",
       hidden = true)
-  @Deprecated
   protected Integer threadsDeprecated;
 
   @CommandLine.Option(

data-loader/cli/src/main/java/com/scalar/db/dataloader/cli/command/dataimport/ImportCommandOptions.java

@@ -45,13 +45,15 @@ public class ImportCommandOptions {
           "Maximum number of threads to use for parallel processing (default: number of available processors)")
   protected Integer maxThreads;
 
-  // Deprecated option - kept for backward compatibility
+  /**
+   * @deprecated As of release 3.6.2. Will be removed in release 4.0.0. Use --max-threads instead
+   */
+  @Deprecated
   @CommandLine.Option(
       names = {DEPRECATED_THREADS_OPTION},
       paramLabel = "<THREADS>",
       description = "Deprecated: Use --max-threads instead",
       hidden = true)
-  @Deprecated
   protected Integer threadsDeprecated;
 
   @CommandLine.Option(