Fix PEP8 styling error

Co-authored-by: Raphael Guzman <38401847+guzman-raphael@users.noreply.github.com>

Author: MaxFBurg

datajoint/s3.py

@@ -25,7 +25,7 @@ def __init__(self, endpoint, bucket, access_key, secret_key, *, secure=False,
             access_key=access_key,
             secret_key=secret_key,
             secure=secure,
-            http_client= (
+            http_client=(
                 urllib3.ProxyManager(proxy_server,
                                      timeout=urllib3.Timeout.DEFAULT_TIMEOUT,
                                      cert_reqs="CERT_REQUIRED",