remove trailing whitespace

Author: coke

doc/Type/Str.pod6

@@ -181,7 +181,7 @@ for the specified base.
 
     1337.base(32).parse-base(32).say; # 1337
     'Perl6'.parse-base(30).say;       # 20652936
-    'FF.DD'.parse-base(16).say;       # 255.863281    
+    'FF.DD'.parse-base(16).say;       # 255.863281
 
 See also: L«:16<FF> syntax for number literals|/syntax/Number%20literals»