[trivial] Rewording in tooltips. Closes #26467 (#26521)

Author: Varunram

docs/4.1/components/popovers.md

@@ -18,7 +18,7 @@ Things to know when using the popover plugin:
 - Specify `container: 'body'` to avoid rendering problems in more complex components (like our input groups, button groups, etc).
 - Triggering popovers on hidden elements will not work.
 - Popovers for `.disabled` or `disabled` elements must be triggered on a wrapper element.
-- When triggered from anchors that wrap across multiple lines, popovers will be centered between the anchors' overall width. Use `white-space: nowrap;` on your `<a>`s to avoid this behavior.
+- When triggered from anchors that wrap across multiple lines, popovers will be centered between the anchors' overall width. Use `.text-nowrap` on your `<a>`s to avoid this behavior.
 - Popovers must be hidden before their corresponding elements have been removed from the DOM.
 
 Keep reading to see how popovers work with some examples.