[task.state] Fix formatting of subclause heading

jensmaurer · tkoeppe · commit 95a10a601b3e · 2025-10-05T21:45:47.000+01:00
Fixes NB US 248-378 (C++26 CD).
diff --git a/source/exec.tex b/source/exec.tex
@@ -7306,7 +7306,7 @@
 \end{codeblock}
 \end{itemdescr}
 
-\rSec3[task.state]{\tcode{Class template \tcode{task::state}}}
+\rSec3[task.state]{Class template \tcode{task::\exposid{state}}}
 
 \begin{codeblock}
 namespace std::execution {
