refactor: preserve multi-line formatting in generated doc comments (#3)

Author: ThomasK33

README.md

@@ -14,7 +14,7 @@ Learn more about the protocol itself at <https://agentclientprotocol.com>.
 <!-- `$ printf 'go get github.com/coder/acp-go-sdk@v%s\n' "$(cat schema/version)"` as bash -->
 
 ```bash
-go get github.com/coder/acp-go-sdk@v0.4.9
+go get github.com/coder/acp-go-sdk@v0.6.3
 ```
 
 ## Get Started

acp_test.go

@@ -352,7 +352,7 @@ func TestConnectionHandlesMessageOrdering(t *testing.T) {
 	}
 	if _, err := as.RequestPermission(context.Background(), RequestPermissionRequest{
 		SessionId: "test-session",
-		ToolCall: ToolCallUpdate{
+		ToolCall: RequestPermissionToolCall{
 			Title:      Ptr("Execute command"),
 			Kind:       ptr(ToolKindExecute),
 			Status:     ptr(ToolCallStatusPending),