html comments fix

Author: tomarra

lib/src/matchers.dart

@@ -94,7 +94,7 @@ class _RouteMatcher<T> extends Matcher {
       hasMaintainStateMatcher ||
       hasFullscreenDialogMatcher;
 
-  /// Takes an [input] string that looks like "FooBarRoute\<MyType\>" and extracts
+  /// Takes an [input] string that looks like `FooBarRoute<MyType>` and extracts
   /// the part "MyType".
   ///
   /// If the `Route<` part cannot be found, it returns the input string