ref(tracing): Rename _possibly_started function

The previous name, `_possibly_stated`, contains a typo, which this change fixes.

Co-authored-by: Anton Pirker <anton.pirker@sentry.io>

sentry_sdk/tracing.py

@@ -695,7 +695,7 @@ def __repr__(self):
             )
         )
 
-    def _possibly_stated(self):
+    def _possibly_started(self):
         # type: () -> bool
         """Returns whether the transaction might have been started.
 
@@ -709,7 +709,7 @@ def _possibly_stated(self):
 
     def __enter__(self):
         # type: () -> Transaction
-        if not self._possibly_stated():
+        if not self._possibly_started():
             logger.warning(
                 """Transaction was entered without being started with sentry_sdk.start_transaction.
                    The transaction will not be sent to Sentry. To fix, start the transaction by