Small documentation fixes across many files.

Change-Id: I3e8787ce4bc6018ea1dc9aef2a2cd4e0a8dde663
diff --git a/docs/html/tools/testing/testing_eclipse.jd b/docs/html/tools/testing/testing_eclipse.jd
index 7d3be47..6c9d55b 100644
--- a/docs/html/tools/testing/testing_eclipse.jd
+++ b/docs/html/tools/testing/testing_eclipse.jd
@@ -218,7 +218,7 @@
 <p>
     Another useful convention is to add the method <code>testPreconditions()</code> to your test
     class. Use this method to test that the application under test is initialized correctly. If this
-    test fails, you know that that the initial conditions were in error. When this happens, further
+    test fails, you know that the initial conditions were in error. When this happens, further
     test results are suspect, regardless of whether or not the tests succeeded.
 </p>
 <p>