6613829: (docs) Readable.read() ReadOnlyBufferException is not linked

Reviewed-by: chegar, lancea

src/share/classes/java/lang/Readable.java

@@ -44,11 +44,11 @@ public interface Readable {
      * rewinding of the buffer is performed.
      *
      * @param cb the buffer to read characters into
-     * @return @return The number of <tt>char</tt> values added to the buffer,
+     * @return The number of {@code char} values added to the buffer,
      *                 or -1 if this source of characters is at its end
      * @throws IOException if an I/O error occurs
      * @throws NullPointerException if cb is null
-     * @throws ReadOnlyBufferException if cb is a read only buffer
+     * @throws java.nio.ReadOnlyBufferException if cb is a read only buffer
      */
     public int read(java.nio.CharBuffer cb) throws IOException;