Update integration_openai_parallel_tool_calls.ts (#5824)

Correcting the Weather Schema's city type.
z.enum -> z.string

Co-authored-by: Brace Sproul <[email protected]>

Author: gurpreetlogiciel

examples/src/models/chat/integration_openai_parallel_tool_calls.ts

@@ -17,7 +17,7 @@ const calculatorSchema = z
   .describe("A tool to perform basic arithmetic operations");
 const weatherSchema = z
   .object({
-    city: z.enum(["add", "subtract", "multiply", "divide"]),
+    city: z.string(),
   })
   .describe("A tool to get the weather in a city");