Fix title too short

Author: Gobot1234

peps/pep-0718.rst

@@ -235,7 +235,7 @@ Explicit specialisation will restrict the set of available overloads
    reveal_type(make[int]("foo", "bar"))  # Invalid: no overload for `make[int](x:str, y: str)` found, a similar overload exists but explicit specialisation prevented its use
 
 Functions Parameterized by ``TypeVarTuple``\ s
-^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 Currently type checkers disallow the use of multiple ``TypeVarTuple`` \s in it's
 generic parameters, however it is currently valid to have a function as such