Fix docs in PyThreadState_GetDict() from threads.rst

Author: manoj-marimuthu

Doc/c-api/threads.rst

@@ -736,7 +736,7 @@ Low-level APIs
 .. c:function:: PyObject* PyThreadState_GetDict()
 
    Return a dictionary in which extensions can store thread-specific state
-   information.  Each extension should use a unique key to use and store a state in
+   information.  Each extension should use a unique key to store a state in
    the dictionary.  It is okay to call this function when no :term:`thread state`
    is :term:`attached <attached thread state>`. If this function returns
    ``NULL`` and no exception has been raised, then the caller should assume no