update doc

managed-ledger/src/main/java/org/apache/bookkeeper/mledger/ManagedCursorMXBean.java

@@ -71,31 +71,31 @@ public interface ManagedCursorMXBean {
     long getPersistZookeeperErrors();
 
     /**
-     * Add write cursor size.
+     * Add write data to a ledger of a cursor (in bytes).
      *
-     * @param size the size of write to cursor
+     * @param size Size of data written to cursor (in bytes)
      */
     void addWriteCursorLedgerSize(long size);
 
     /**
-     * Add read cursor size.
+     * Add read data from a ledger of a cursor (in bytes).
      *
-     * @param size the size of read from cursor
+     * @param size Size of data read from cursor (in bytes)
      */
     void addReadCursorLedgerSize(long size);
 
     /**
-     * @return the size of write to ledger size
+     * @return the size of data written to cursor (in bytes)
      */
     long getWriteCursorLedgerSize();
 
     /**
-     * @return the size of write to ledger size (accounting for without replicas)
+     * @return the size of data written to cursor without replicas (in bytes)
      */
     long getWriteCursorLedgerLogicalSize();
 
     /**
-     * @return the size of read from ledger size
+     * @return the size of data read from cursor (in bytes)
      */
     long getReadCursorLedgerSize();