[res.on.data.races] Fix one more occurrence of "could".

Author: zygoloid

Diff for: source/lib-intro.tex

@@ -2907,7 +2907,7 @@
 \pnum
 \begin{note}
 This means, for example, that implementations can't use an object with static storage duration for
-internal purposes without synchronization because it could cause a data race even in
+internal purposes without synchronization because doing so can cause a data race even in
 programs that do not explicitly share objects between threads.
 \end{note}