locals: remove trailing whitespace in docs

basis/locals/locals-docs.factor

@@ -127,7 +127,7 @@ TUPLE: counter adder subtractor ;
 <counter>
 [ adder>>      call . ]
 [ adder>>      call . ]
-[ subtractor>> call . ] tri """
+[ subtractor>> call . ] tri"""
 """1
 2
 1"""