[css-round-display] Add issue about positioning items (ACTION-714: https://www.w3.org/Style/CSS/Tracker/actions/714)(2)

Author: anawhj

css-round-display/Overview.bs

@@ -339,5 +339,5 @@ What value does the percentage value of the 'polar-distance' property refer to?
 Will an element (or a child) itself be rotated through the 'polar-angle' property?
 </p>
 <p class="issue">
-How to position items to the edge of the containing block without overflowing it? ( 'polar-anchor' is suggested)
+How to position items to the edge of the containing block without overflowing it? (<i>polar-anchor</i> could be suggested)
 </p>