[temp.names] Remove extraneous closing brace

Author: tkoeppe

source/templates.tex

@@ -852,7 +852,7 @@
   static constexpr std::meta::info r = ^^T::adjust;
   T* p3 = [:r:]<200>();                 // error: \tcode{<} means less than
   T* p4 = template [:r:]<200>();        // OK, \tcode{<} starts template argument list
-}}
+}
 \end{codeblock}
 \end{example}