use strong for highlitght

src/Polly.Core/ResilienceStrategy.cs

@@ -27,7 +27,7 @@ public abstract partial class ResilienceStrategy
     /// An instance of pending <see cref="ValueTask"/> for asynchronous executions or completed <see cref="ValueTask"/> task for synchronous exexutions.
     /// </returns>
     /// <remarks>
-    /// <c>This method is called for both synchronous and asynchronous execution flows.</c>
+    /// <strong>This method is called for both synchronous and asynchronous execution flows.</strong>
     /// <para>
     /// You can use <see cref="ResilienceContext.IsSynchronous"/> to dermine wheether the <paramref name="callback"/> is synchronous or asynchronous one.
     /// This is useful when the custom strategy behaves differently in each execution flow. In general, for most strategies, the implementation