Resolve all references in a parameter

Author: darrelmiller

src/Microsoft.OpenApi.Readers/Services/OpenApiReferenceResolver.cs

@@ -128,6 +128,16 @@ public override void Visit(IList<OpenApiParameter> parameters)
             ResolveList(parameters);
         }
 
+        /// <summary>
+        /// Resolve all references used in a parameter
+        /// </summary>
+        public override void Visit(OpenApiParameter parameter)
+        {
+            ResolveObject(parameter.Schema, r => parameter.Schema = r);
+            ResolveMap(parameter.Examples);
+        }
+
+
         /// <summary>
         /// Resolve all references to links
         /// </summary>