Fix BlameResult.computeRange JavaDoc to exclude end index

Change-Id: Ifd7dd86e3848eb7a522ba5c49d5c216777484f3b
Signed-off-by: Konrad Kügler <swamblumat-eclipsebugs@yahoo.de>

org.eclipse.jgit/src/org/eclipse/jgit/blame/BlameResult.java

@@ -280,9 +280,9 @@ public int lastLength() {
 	 * Compute until the entire range has been populated.
 	 *
 	 * @param start
-	 *            first index to examine.
+	 *            first index to examine (inclusive).
 	 * @param end
-	 *            last index to examine.
+	 *            end index (exclusive).
 	 * @throws IOException
 	 *             the repository cannot be read.
 	 */