Oops, README is rst not md

Author: catherinedevlin

README.rst

@@ -9,7 +9,7 @@ Introduces a %sql (or %%sql) magic.
 Legacy project
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-IPython-SQL's functionality and maintenance have been eclipsed by [JupySQL](https://github.com/ploomber/jupysql), a fork maintained and developed by the Ploomber team.  Future work will be directed into JupySQL - please file issues there, as well!
+IPython-SQL's functionality and maintenance have been eclipsed by JupySQL_, a fork maintained and developed by the Ploomber team.  Future work will be directed into JupySQL - please file issues there, as well!
 
 Description
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@@ -439,3 +439,4 @@ Credits
 .. _Distribute: http://pypi.python.org/pypi/distribute
 .. _Buildout: http://www.buildout.org/
 .. _modern-package-template: http://pypi.python.org/pypi/modern-package-template
+.. _JupySQL: https://github.com/ploomber/jupysql