fix readme

Author: jcat4

README.md

@@ -652,7 +652,7 @@ end
 
 ### HTTP Transport Layer
 
-Use the `MCP::Client::Http` transport to interact with MCP servers using simple HTTP requests.
+Use the `MCP::Client::HTTP` transport to interact with MCP servers using simple HTTP requests.
 
 You'll need to add `faraday` as a dependency in order to use the HTTP transport layer: