fix typo (closes #20892)
diff --git a/Doc/howto/pyporting.rst b/Doc/howto/pyporting.rst
index 98d58b8..9d7e859 100644
--- a/Doc/howto/pyporting.rst
+++ b/Doc/howto/pyporting.rst
@@ -111,7 +111,7 @@
Projects to Consider
--------------------
-The lowest level library for suppoting Python 2 & 3 simultaneously is six_.
+The lowest level library for supporting Python 2 & 3 simultaneously is six_.
Reading through its documentation will give you an idea of where exactly the
Python language changed between versions 2 & 3 and thus what you will want the
library to help you continue to support.