readd desc to spankwargs

Author: sentrivana

sentry_sdk/tracing.py

@@ -57,6 +57,9 @@ class SpanKwargs(TypedDict, total=False):
         https://develop.sentry.dev/sdk/performance/span-operations/
         """
 
+        description: str
+        """A description of what operation is being performed within the span."""
+
         status: str
         """The span's status. Possible values are listed at https://develop.sentry.dev/sdk/event-payloads/span/"""