fixing formatting.

Author: Yusuke Tsutsumi

ext/opentelemetry-ext-wsgi/src/opentelemetry/ext/wsgi/__init__.py

@@ -87,7 +87,9 @@ def __call__(self, environ, start_response):
         path_info = environ["PATH_INFO"] or "/"
         parent_span = propagators.extract(get_header_from_environ, environ)
 
-        with tracer.start_span(path_info, parent_span, kind=trace.SpanKind.SERVER) as span:
+        with tracer.start_span(
+            path_info, parent_span, kind=trace.SpanKind.SERVER
+        ) as span:
             self._add_request_attributes(span, environ)
             start_response = self._create_start_response(span, start_response)