tests: fix cut & paste error

Damn ... I fixed it locally and didn't properly commit the fix before
push.

Signed-off-by: Sylvain Munaut <tnt@246tNt.com>
diff --git a/tests/testsuite.at b/tests/testsuite.at
index e65ca7c..2ea7412 100644
--- a/tests/testsuite.at
+++ b/tests/testsuite.at
@@ -6,7 +6,7 @@
 AT_SETUP([a5])
 AT_KEYWORDS([a5])
 cat $abs_srcdir/a5/a5_test.ok > expout
-AT_CHECK([$abs_top_builddir/tests/a5/bitrev_test], [], [expout])
+AT_CHECK([$abs_top_builddir/tests/a5/a5_test], [], [expout])
 AT_CLEANUP
 
 AT_SETUP([bits])