[css-align] Stray s/offset/inset/ that somehow got lost.

Author: fantasai

css-align/Overview.bs

@@ -1057,7 +1057,7 @@ Inline/Main-Axis Alignment: the 'justify-self' property</h3>
 				In terms of CSS2.1 formatting [[!CSS2]],
 				the rules for “over-constrained” computations in <a href="https://www.w3.org/TR/CSS21/visudet.html#abs-non-replaced-width">section 10.3.7</a>
 				are ignored in favor of alignment as specified here,
-				and the used value of the offset properties are not adjusted to correct for the over-constraint.
+				and the used value of the inset properties are not adjusted to correct for the over-constraint.
 
 				Values other than ''justify-self/stretch'' cause <a href="https://www.w3.org/TR/CSS21/visudet.html#abs-non-replaced-width">non-replaced absolutely-positioned boxes</a>
 				to use <a>fit-content sizing</a> for calculating ''width/auto'' inline sizes.