[docs]: add CURL commands to some how-tos (#1325)

docs/docs/cloud/how-tos/interrupt_concurrent.md

@@ -29,7 +29,7 @@ Now, let's import our required packages and instantiate our client, assistant, a
     from langchain_core.messages import convert_to_messages
     from langgraph_sdk import get_client
 
-    client = get_client(url="whatever-your-deployment-url-is")
+    client = get_client(url="<DEPLOYMENT_URL>")
     assistant_id = "agent"
     thread = await client.threads.create()
     ```
@@ -39,7 +39,7 @@ Now, let's import our required packages and instantiate our client, assistant, a
     ```js
     import { Client } from "@langchain/langgraph-sdk";
 
-    const client = new Client({ apiUrl:"whatever-your-deployment-url-is" });
+    const client = new Client({ apiUrl:"<DEPLOYMENT_URL>" });
     const assistantId = "agent";
     const thread = await client.threads.create();
     ```