News165: edits to murch section

Author: jnewbery

_posts/en/newsletters/2021-09-08-newsletter.md

@@ -164,7 +164,7 @@ BOLTs][bolts repo].*
     baseline feerate, resulting in a waste score deduction for spending inputs at
     lower feerates and a waste score increase at higher feerates. Change outputs
     always increase the waste score by the cost of the change output creation as
-    well as the future cost of spending the change output. 
+    well as the future cost of spending the change output.
 
     In a wallet spending at various feerates, this approach will shift some
     input consumption to lower feerates, reducing the overall wallet operation