Fixed typo in django/db/backends/postgresql/psycopg_any.py comment.

django/db/backends/postgresql/psycopg_any.py

@@ -53,7 +53,7 @@ try:
 
     @lru_cache
     def get_adapters_template(use_tz, timezone):
-        # Create at adapters map extending the base one.
+        # Create an adapters map extending the base one.
         ctx = adapt.AdaptersMap(adapters)
         # Register a no-op dumper to avoid a round trip from psycopg version 3
         # decode to json.dumps() to json.loads(), when using a custom decoder