Improve deprecated warning message

Author: ypeckstadt

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

@@ -160,7 +160,7 @@ private void warnAboutIgnoredDeprecatedOptions() {
                   + DEPRECATED_INCLUDE_METADATA_OPTION
                   + " option is deprecated and no longer has any effect. "
                   + "Use the 'scalar.db.consensus_commit.include_metadata.enabled' configuration property "
-                  + "in your ScalarDB properties file to control whether transaction metadata is included in full scans.|@");
+                  + "in your ScalarDB properties file to control whether transaction metadata is included in read operations.|@");
 
       logger.warn(warning);
     }

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

@@ -79,7 +79,7 @@ public class ExportCommandOptions {
   @CommandLine.Option(
       names = {"--include-metadata", "-m"},
       description =
-          "Deprecated: This option is no longer used. Please use scalar.db.consensus_commit.include_metadata.enabled to control whether transaction metadata is included in full scans.",
+          "Deprecated: This option is no longer used. Please use scalar.db.consensus_commit.include_metadata.enabled to control whether transaction metadata is included in read operations.",
       defaultValue = "false",
       hidden = true)
   protected boolean includeTransactionMetadata;