Fix a typo in README.rst
The trailing backtick is not needed.
@@ -5,7 +5,7 @@ PyGMT
`Documentation (development version) <https://www.pygmt.org/dev>`__ |
`Contact <https://gitter.im/GenericMappingTools/pygmt>`__ |
-`Forum <https://forum.generic-mapping-tools.org>`__ `
+`Forum <https://forum.generic-mapping-tools.org>`__
.. image:: http://img.shields.io/pypi/v/pygmt.svg?style=flat-square
:alt: Latest version on PyPI
