Minor TurboJPEG doc tweaks

- When transforming, the worst-case JPEG buffer size depends on the
  subsampling level used in the destination image, since a grayscale
  transform might have been applied.

- Parentheses Police

java/org/libjpegturbo/turbojpeg/TJDecompressor.java

@@ -263,7 +263,7 @@ public class TJDecompressor implements Closeable {
    * subsampling in the JPEG image (see {@link TJ#PARAM_SUBSAMP}.)  The
    * cropping region should be specified relative to the scaled image
    * dimensions.  Unless <code>croppingRegion</code> is {@link TJ#UNCROPPED},
-   * the JPEG header must be read (see {@link #setSourceImage(byte[], int)}
+   * the JPEG header must be read (see {@link #setSourceImage(byte[], int)})
    * prior to calling this method.
    */
   @SuppressWarnings("checkstyle:HiddenField")