[css-align] Fix two occurrences of 'the the'.

Author: dbaron

css-align/Overview.bs

@@ -888,7 +888,7 @@ Inline/Main-Axis Alignment: the 'justify-items' property</h3>
 		<dt><dfn>auto</dfn>
 		<dd>
 			If the <a>inherited value</a> of ''justify-items'' includes the ''legacy'' keyword,
-			''justify-items/auto'' computes to the the <a>inherited value</a>.
+			''justify-items/auto'' computes to the <a>inherited value</a>.
 
 			Otherwise, ''justify-items/auto'' computes to:
 
@@ -1016,7 +1016,7 @@ Determining the Baseline of a Box</h2>
 			are <a>generated</a> from their shared <a>alignment baseline</a>
 			and the column's <a>first available font</a>,
 			after alignment has been performed.
-			Otherwise, the the first (last) inline-axis baselines of the row
+			Otherwise, the first (last) inline-axis baselines of the row
 			are <a>synthesized</a> from the extreme content edges of the cells in the row.
 			[[!CSS21]]