Docs: inline forms example wraps to two lines in new v5 layout

due to the narrower central content column, https://v5.getbootstrap.com/docs/5.0/forms/layout/#inline-forms wraps to two lines even at large 1920x1080 browser window size. while it's good that it shows that it adapts, maybe we should provide a slightly smaller example that's at least on one line at the large size (e.g. drop one of the fields?)