Fixed async context manager protocol

Author: Sub0X

CHANGELOG.md

@@ -10,7 +10,7 @@ async def main():
     api_token = os.environ.get("VNDB_API_TOKEN") # Keep env var name or change if you prefer
 
     # Using sandbox for this example, set use_sandbox=False for the real API
-    async with VNDB(api_token=api_token, use_sandbox=True) as vndb: # VNDB class name remains
+    async with VNDB(api_token=api_token, use_sandbox=False) as vndb:
         try:
             print("Fetching VNDB Stats:")
             stats = await vndb.get_stats()

CONTRIBUTING.md

@@ -313,7 +313,9 @@ def _get_session(self) -> aiohttp.ClientSession:
     async def close(self):
         if self._session_internal is not None and self._session_owner and not self._session_internal.closed:
             await self._session_internal.close()
-            await asyncio.sleep(0.05) # Allow time for cleanup    async def __aenter__(self):
+            await asyncio.sleep(0.05)  # Allow time for cleanup
+
+    async def __aenter__(self):
         return self
 
     async def __aexit__(self, exc_type, exc_val, exc_tb):