DOC: add missing white space

And more appeasing the linter

Author: tacaswell

src/bluesky/callbacks/zmq.py

@@ -23,32 +23,32 @@
 
 def _normalize_address(inp: Union[str, tuple, int]):
     if isinstance(inp, str):
-        if '://' in inp:
-            protocol, _, rest_str = inp.partition('://')
+        if "://" in inp:
+            protocol, _, rest_str = inp.partition("://")
         else:
-            protocol = 'tcp'
+            protocol = "tcp"
             rest_str = inp
     elif isinstance(inp, tuple):
-        if inp[0] in ['tcp', 'ipc']:
+        if inp[0] in ["tcp", "ipc"]:
             protocol, *rest = inp
         else:
-            protocol = 'tcp'
+            protocol = "tcp"
             rest = list(inp)
-        if protocol == 'tcp':
+        if protocol == "tcp":
             if len(rest) == 2:
-                rest_str = ':'.join(str(r) for r in rest)
+                rest_str = ":".join(str(r) for r in rest)
             else:
-                rest_str, = rest
+                (rest_str,) = rest
         else:
-            rest_str, = rest
+            (rest_str,) = rest
     elif isinstance(inp, int):
-        protocol = 'tcp'
-        rest_str = f'localhost:{inp}'
+        protocol = "tcp"
+        rest_str = f"localhost:{inp}"
 
     else:
         raise TypeError(f"Input expected to be str or tuple, not {type(inp)}")
 
-    return f'{protocol}://{rest_str}'
+    return f"{protocol}://{rest_str}"
 
 
 class Bluesky0MQDecodeError(Exception):
@@ -145,6 +145,7 @@ class Proxy:
      - ``6657``  (implicitly binds to ``'tcp://localhost:6657'``
      - ``('tcp', 'localhost', 6657)``
      - ``('localhost', 6657)``
+
     Parameters
     ----------
     in_address : str or tuple or int, optional