changes: Fix typo in changes/ticket30893

Signed-off-by: David Goulet <dgoulet@torproject.org>

changes/ticket30893

@@ -1,3 +1,3 @@
-  o Minor features (testing)P:
+  o Minor features (testing):
     - Improve test coverage for our existing configuration parsing and
       management API. Closes ticket 30893.