Fixup: minor repairs

Author: jensmaurer

source/algorithms.tex

@@ -331,7 +331,7 @@
 void f() {
   int a[] = {1,2};
   std::for_each(std::execution::par_unseq, std::begin(a), std::end(a), [&](int) {
-    std::lock_guard<mutex> guard(m); // incorrect: lock_guard constructor calls m.lock()
+    std::lock_guard<mutex> guard(m);            // incorrect: \tcode{lock_guard} constructor calls \tcode{m.lock()}
   ++x;
   });
 }

source/utilities.tex

@@ -18945,7 +18945,7 @@
   inline constexpr sequenced_policy            seq{ @\unspec@ };
   inline constexpr parallel_policy             par{ @\unspec@ };
   inline constexpr parallel_unsequenced_policy par_unseq{ @\unspec@ };
-  inline constexpr unsequenced_policy          unseq{ @unspec@ };
+  inline constexpr unsequenced_policy          unseq{ @\unspec@ };
 }
 \end{codeblock}