Merge pull request #690 from tommystanton/exception-typo

Typo in X::Seq::Consumed exception

src/core/Exception.pm

@@ -2334,7 +2334,7 @@ my class X::InvalidTypeSmiley does X::Comp {
 my class X::Seq::Consumed is Exception {
     method message() {
         "This Seq has already been iterated, and its values consumed\n" ~
-        "(you might solve this by addding .cache on usages of the Seq, or\n" ~
+        "(you might solve this by adding .cache on usages of the Seq, or\n" ~
         "by assigning the Seq into an array)"
     }
 }