Docs: Fix README syntax highlight #635

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8 warnings

Node.js 16 actions are deprecated. Please update the following actions to use Node.js 20: actions/checkout@v3, actions/cache@v3. For more information see: https://github.blog/changelog/2023-09-22-github-actions-transitioning-from-node-16-to-node-20/.

Google.Protobuf.Compiler.CodeGeneratorRequest.new/1 is deprecated. Build the struct by hand with %MyMessage{...} or use struct/2

Google.Protobuf.Compiler.CodeGeneratorResponse.new/1 is deprecated. Build the struct by hand with %MyMessage{...} or use struct/2

redefining module Google.Api.PbExtension (current version loaded from _build/test/lib/grpc/ebin/Elixir.Google.Api.PbExtension.beam)

redefining module Google.Api.Http (current version loaded from _build/test/lib/grpc/ebin/Elixir.Google.Api.Http.beam)

redefining module Google.Api.HttpRule (current version loaded from _build/test/lib/grpc/ebin/Elixir.Google.Api.HttpRule.beam)

redefining module Google.Api.CustomHttpPattern (current version loaded from _build/test/lib/grpc/ebin/Elixir.Google.Api.CustomHttpPattern.beam)

Helloworld.HelloRequest.new/1 is deprecated. Build the struct by hand with %MyMessage{...} or use struct/2