[pre-commit.ci lite] apply automatic fixes

pre-commit-ci-lite[bot] · web-flow · commit bcc13500173b · 2026-03-04T10:53:56.000Z
diff --git a/docs/testing.md b/docs/testing.md
@@ -218,4 +218,4 @@ Rather than implementing a full `capfd`-style mechanism, {class}`CliRunner` take
 
 ```{versionchanged} 8.3.2
 `fileno()` on the redirected streams now returns the original stream's file descriptor instead of raising.
-```
+```
