Spell Bitbucket correctly. (GH-16862)
diff --git a/Doc/installing/index.rst b/Doc/installing/index.rst
index dc44aa6..31e9b0b 100644
--- a/Doc/installing/index.rst
+++ b/Doc/installing/index.rst
@@ -53,7 +53,7 @@
evolution of the standard packaging tools and the associated metadata and
file format standards. They maintain a variety of tools, documentation,
and issue trackers on both `GitHub <https://github.com/pypa>`__ and
- `BitBucket <https://bitbucket.org/pypa/>`__.
+ `Bitbucket <https://bitbucket.org/pypa/>`__.
* ``distutils`` is the original build and distribution system first added to
the Python standard library in 1998. While direct use of ``distutils`` is
being phased out, it still laid the foundation for the current packaging