Fix parse error with From

theories/examples/stack/proof_elim_graph.v

@@ -2252,7 +2252,7 @@ Proof.
             clear -Eqeo1 InMb0. apply Some_inj in Eqeo1 as ->. done.
           - apply (stk_base_stack_logview SP _ _ _ _ EqTps Eqeo1 _ _
                       Eqo1 EqeVob InpsIde). }
-        (* If (u1, o1) is an exchange pair, we know that o1 = S u1. From
+        (* If (u1, o1) is an exchange pair, we know that o1 = S u1. With
           psIde < o1, we have psIde ≤ u1. But we also have u1 < psIde
           ==> contradiction *)
         assert (Eqo1' := stk_xchg_consec SP _ _ _ _ Eqeu1 Eqeo1 In1).