Address PR feedback

Author: andyw8

examples/http_server.rb

@@ -61,7 +61,7 @@ def template(args, server_context:)
   prompts: [ExamplePrompt],
   resources: [
     MCP::Resource.new(
-      uri: "example://test_resource",
+      uri: "https://test_resource.invalid",
       name: "Test resource",
       description: "Test resource that echoes back the uri as its content",
       mime_type: "text/plain",

examples/stdio_server.rb

@@ -58,7 +58,7 @@ def template(args, server_context:)
   prompts: [ExamplePrompt],
   resources: [
     MCP::Resource.new(
-      uri: "example://test_resource",
+      uri: "https://test_resource.invalid",
       name: "Test resource",
       description: "Test resource that echoes back the uri as its content",
       mime_type: "text/plain",

test/mcp/server_test.rb

@@ -44,14 +44,14 @@ class ServerTest < ActiveSupport::TestCase
       end
 
       @resource = Resource.new(
-        uri: "test://test_resource",
+        uri: "https://test_resource.invalid",
         name: "Test resource",
         description: "Test resource",
         mime_type: "text/plain",
       )
 
       @resource_template = ResourceTemplate.new(
-        uri_template: "test://test_resource/{id}",
+        uri_template: "https://test_resource.invalid/{id}",
         name: "Test resource",
         description: "Test resource",
         mime_type: "text/plain",
@@ -532,7 +532,7 @@ def call(message:, server_context: nil)
 
     test "#resources_list_handler sets the resources/list handler" do
       @server.resources_list_handler do
-        [{ uri: "test://test_resource", name: "Test resource", description: "Test resource" }]
+        [{ uri: "https://test_resource.invalid", name: "Test resource", description: "Test resource" }]
       end
 
       request = {
@@ -543,7 +543,7 @@ def call(message:, server_context: nil)
 
       response = @server.handle(request)
       assert_equal(
-        { resources: [{ uri: "test://test_resource", name: "Test resource", description: "Test resource" }] },
+        { resources: [{ uri: "https://test_resource.invalid", name: "Test resource", description: "Test resource" }] },
         response[:result],
       )
       assert_instrumentation_data({ method: "resources/list" })