Fix spelling

attribute/set.go

@@ -339,7 +339,7 @@ func (l *Set) Filter(re Filter) (Set, []KeyValue) {
 		// attribute above that needs to be filtered out.
 		return Set{equivalent: computeDistinct(slice[1:])}, slice[:1]
 	}
-	// Move the filtred slice[first] to the front (preserving order).
+	// Move the filtered slice[first] to the front (preserving order).
 	kv := slice[first]
 	copy(slice[1:first+1], slice[:first])
 	slice[0] = kv