Remove duplication.
diff --git a/Doc/c-api/exceptions.rst b/Doc/c-api/exceptions.rst
index a001145..beedfbe 100644
--- a/Doc/c-api/exceptions.rst
+++ b/Doc/c-api/exceptions.rst
@@ -475,7 +475,7 @@
Marks a point where a recursive C-level call is about to be performed.
- If :const:`USE_STACKCHECK` is defined, this function checks if the the OS
+ If :const:`USE_STACKCHECK` is defined, this function checks if the OS
stack overflowed using :cfunc:`PyOS_CheckStack`. In this is the case, it
sets a :exc:`MemoryError` and returns a nonzero value.