docs: fix a typo in FileWriter docstring

diff --git a/psycopg/psycopg/copy.py b/psycopg/psycopg/copy.py
index 286c223c97bd8732d4599d7ca8d59825b434cf3c..cca5e8572d9ba201fb0d47287a1b716e6808b8e1 100644 (file)
--- a/psycopg/psycopg/copy.py
+++ b/psycopg/psycopg/copy.py
@@ -453,7 +453,7 @@ class FileWriter(Writer):
     """
     A `Writer` to write copy data to a file-like object.
 
-    :param file: the file where to write copy data. It muse be open for writing
+    :param file: the file where to write copy data. It must be open for writing
         in binary mode.
     """