[exec.sysctxrepl.psb] Fix typo in range expression

A misapplication of P2079R10.

Author: tkoeppe

source/exec.tex

@@ -8608,7 +8608,7 @@
 \end{itemize}
 \item
 If \tcode{r.execute(b, e)} is called,
-then \tcode{b} and \tcode{e} are in the range \range{0}{n} and
+then \tcode{b} and \tcode{e} are in the range \crange{0}{n} and
 $\tcode{b} < \tcode{e}$.
 \item
 For each $i$ in \range{0}{n},