chore: Markdown lint, class updates for CI

Author: kaylareopelle

instrumentation/grpc/README.md

@@ -8,15 +8,22 @@ OpenTelemetry instrumentation for users of the `grpc` gem
 > [!WARNING]
 > Right now, the gem only instruments outbound requests to gRPC services
 
+> [!WARNING]
+> This gem is not ready for release by the open-telemetry org yet, but other versions are available on RubyGems
+
 ## Installation
 
 Install the gem and add to the application's Gemfile by executing:
 
-    $ bundle add opentelemetry-instrumentation-grpc
+```sh
+  $ bundle add opentelemetry-instrumentation-grpc
+```
 
 If bundler is not being used to manage dependencies, install the gem by executing:
 
-    $ gem install opentelemetry-instrumentation-grpc
+```sh
+  $ gem install opentelemetry-instrumentation-grpc
+```
 
 ## Usage
 

instrumentation/grpc/lib/opentelemetry/instrumentation/grpc/instrumentation.rb

@@ -11,6 +11,7 @@ module Grpc
       class Instrumentation < OpenTelemetry::Instrumentation::Base
         install do |_config|
           require_dependencies
+          patch
         end
 
         option :allowed_metadata_headers, default: [], validate: :array
@@ -22,6 +23,10 @@ class Instrumentation < OpenTelemetry::Instrumentation::Base
 
         private
 
+        def patch
+          ::GRPC::ClientInterceptor.prepend(Interceptors::Client)
+        end
+
         def require_dependencies
           require_relative "interceptors/client"
         end

instrumentation/grpc/lib/opentelemetry/instrumentation/grpc/interceptors/client.rb

@@ -8,7 +8,7 @@ module OpenTelemetry
   module Instrumentation
     module Grpc
       module Interceptors
-        class Client < ::GRPC::ClientInterceptor
+        class Client
           def request_response(request: nil, call: nil, method: nil, metadata: nil, &blk)
             call(type: "request_response", requests: [request], call: call, method: method, metadata: metadata, &blk)
           end