Fix comment typo.
diff --git a/Lib/runpy.py b/Lib/runpy.py
index 50d19f5..06c5a87 100755
--- a/Lib/runpy.py
+++ b/Lib/runpy.py
@@ -138,7 +138,7 @@
 
        Note that the executed module will have full access to the
        __main__ namespace. If this is not desirable, the run_module()
-       function sbould be used to run the module code in a fresh namespace.
+       function should be used to run the module code in a fresh namespace.
 
        At the very least, these variables in __main__ will be overwritten:
            __name__