added missing comma to backend driver list

jdh2358 · jdh2358 · commit b960c4bc0559 · 2008-12-09T03:37:16.000Z
svn path=/trunk/matplotlib/; revision=6529
diff --git a/examples/tests/backend_driver.py b/examples/tests/backend_driver.py
@@ -221,7 +221,7 @@
     'quad_bezier.py',
     'scatter_piecharts.py',
     'span_regions.py',
-    'two_scales.py'
+    'two_scales.py',
     'unicode_minus.py',
     'watermark_image.py',
     'watermark_text.py',
