Update Accessors URL for PdVega package. (pandas-dev#26653)

shawnbrown · vaibhavhrt · commit 8a1f71490fc6 · 2019-06-06T22:10:15.000+05:30
See altair-viz/pdvega@7476a8a26b for details.
diff --git a/doc/source/ecosystem.rst b/doc/source/ecosystem.rst
@@ -363,4 +363,5 @@ Library        Accessor   Classes
 ============== ========== =========================
 
 .. _cyberpandas: https://cyberpandas.readthedocs.io/en/latest
-.. _pdvega: https://jakevdp.github.io/pdvega/
+.. _pdvega: https://altair-viz.github.io/pdvega/
+
