Fix async call example

Signed-off-by: Maxim S <[email protected]>

README.md

@@ -377,13 +377,13 @@ import asyncio
 import concurrent.futures
 from twocaptcha import TwoCaptcha
 
-captcha_result = await captchaSolver(image)
-
 async def captchaSolver(image):
     loop = asyncio.get_running_loop()
-    with concurrent.future.ThreadPoolExecutor() as pool:
+    with concurrent.futures.ThreadPoolExecutor() as pool:
         result = await loop.run_in_executor(pool, lambda: TwoCaptcha(API_KEY).normal(image))
         return result
+
+captcha_result = asyncio.run(captchaSolver(image))
 ```