Change "Many authors require" to "Some authors require" and remove T0

Author: GeoffreySangston

properties/P000238.md

@@ -15,7 +15,7 @@ $X$ is homeomorphic to a [topological vector space](https://en.wikipedia.org/wik
 
 Equivalently, there exists a continuous commutative group operation $(x, y) \mapsto x + y$ on $X$, and a continuous scalar multiplication operation $\mathbb{R} \times X \to X$, $(\lambda, x) \mapsto \lambda x$, where $\mathbb{R}$ has the Euclidean topology, such that these operations together satisfy the axioms of a real vector space.
 
-Many authors, such as Rudin, additionally require separation axioms like {P3}, {P2} or {P1}, though we do not.
+Some others require separation axioms like {P3} or {P2}, though we do not.
 
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 #### Meta-properties