docs(button): revised based on feedback

Co-authored-by: Najika Halsema Yoo <44980010+najikahalsema@users.noreply.github.com>

packages/button/README.md

@@ -348,7 +348,7 @@ While disabled, `<sp-button>` elements will not respond to click events and will
 ### Pending
 
 While in pending state, `<sp-button>` elements will not respond to click events and will appear faded with an indeterminate `<sp-progress-circle>`.
-`<sp-button>` elements label and icon will be hidden while in pending state.
+The `<sp-button>` element's label and icon will be hidden while in pending state.
 
 Note: The pending state of the `<sp-button>` element is applied after a 1s delay to avoid flashing the pending state for quick actions. You can override the delay by adding custom css var `--pending-delay` to your css.