Fix Issue #21528 - Fix documentation typos
diff --git a/Doc/howto/pyporting.rst b/Doc/howto/pyporting.rst
index 9d7e859..17fc81b 100644
--- a/Doc/howto/pyporting.rst
+++ b/Doc/howto/pyporting.rst
@@ -60,7 +60,7 @@
`trove classifiers`_ to signify what versions of Python it **currently**
supports. At minimum you should specify the major version(s), e.g.
``Programming Language :: Python :: 2`` if your project currently only supports
-Python 2. It is preferrable that you be as specific as possible by listing every
+Python 2. It is preferable that you be as specific as possible by listing every
major/minor version of Python that you support, e.g. if your project supports
Python 2.6 and 2.7, then you want the classifiers of::