Fix duplicated words 'Be be' (pythonGH-108815)

Author: vitaldmit

Misc/NEWS.d/3.10.0a3.rst

@@ -153,7 +153,7 @@ Allow an unparenthesized walrus in subscript indexes.
 .. section: Core and Builtins
 
 Make sure that the compiler front-end produces a well-formed control flow
-graph. Be be more aggressive in the compiler back-end, as it is now safe to
+graph. Be more aggressive in the compiler back-end, as it is now safe to
 do so.
 
 ..