:recycle: flipping comparison to use override name for title creation

vue-theme/src/store/modules/arrangements.js

         const lastWord = post.slug.split('-').filter(c => c).pop()
         const firstCharaOflastWord = lastWord[0]
         const firstCharaOfSortWord = post.sortname ? post.sortname[0] : 'z'
-        const charaIndex = alphabet.indexOf(firstCharaOflastWord) < alphabet.indexOf(firstCharaOfSortWord) ? alphabet.indexOf(firstCharaOflastWord) : alphabet.indexOf(firstCharaOfSortWord)
+        const charaIndex = alphabet.indexOf(firstCharaOflastWord) > alphabet.indexOf(firstCharaOfSortWord) ? alphabet.indexOf(firstCharaOflastWord) : alphabet.indexOf(firstCharaOfSortWord)
 
         storeTitle(alphabet[charaIndex])
         flatPacked.push(post)