Reword 9.1.0 changelog item.

Author: jennifer-shehane

content/_changelogs/9.1.0.md

@@ -23,7 +23,7 @@ _Released 11/22/2021_
 - The warning message for retrying connection to a browser has been improved to
   indicate when it is still waiting. Fixes
   [#18644](https://github.com/cypress-io/cypress/issues/18644).
- - Cypress commands that rely on `this` context now have access to `this` when 
-   overridden. Fixes [#18899](https://github.com/cypress-io/cypress/pull/18899).
- - Correct Test Configuration normalization for describe.only & it.only blocks.
-   Fixes [#18959](https://github.com/cypress-io/cypress/issues/18959).
+- Cypress commands that rely on `this` context now have access to `this` when
+  overridden. Fixes [#18899](https://github.com/cypress-io/cypress/pull/18899).
+- Test configuration is now correctly applied when using `only`. Fixes
+  [#18959](https://github.com/cypress-io/cypress/issues/18959).