Syntax error Fixed : GptGo.py
diff --git a/g4f/Provider/GptGo.py b/g4f/Provider/GptGo.py
index ac3f7fe894..726c7a99af 100644
--- a/g4f/Provider/GptGo.py
+++ b/g4f/Provider/GptGo.py
@@ -63,7 +63,7 @@ async def create_async_generator(
                         if line["choices"][0]["finish_reason"] == "stop":
                             break
                         
-                        content = line["choices"][0]["delta"].get("content"):
+                        content = line["choices"][0]["delta"].get("content")
                         if content:
                             yield content
 
@@ -79,4 +79,4 @@ def params(cls):
             ("temperature", "float"),
         ]
         param = ", ".join([": ".join(p) for p in params])
-        return f"g4f.provider.{cls.__name__} supports: ({param})"
\ No newline at end of file
+        return f"g4f.provider.{cls.__name__} supports: ({param})"
