Doc change: update ADT 0.9.8 checksum and size.

Change-Id: I610985683cd4608b075a22e8d8089de7896eb312
diff --git a/docs/html/sdk/eclipse-adt.jd b/docs/html/sdk/eclipse-adt.jd
index 4594bb5..3d4b6a12 100644
--- a/docs/html/sdk/eclipse-adt.jd
+++ b/docs/html/sdk/eclipse-adt.jd
@@ -428,7 +428,7 @@
 
 <h3 id="preparing">Configuring the ADT Plugin</h3>
 
-<p>Once you've successfully downnloaded ADT as described above, the next step
+<p>Once you've successfully downloaded ADT as described above, the next step
 is to modify your ADT preferences in Eclipse to point to the Android SDK directory:</p>
 
 <ol>