Fix typo

doc/Language/containers.pod6

@@ -5,7 +5,7 @@
 =SUBTITLE A low-level explanation of Perl 6 containers
 
 This section explains the levels of indirection involved in dealing with
-variables and container elements. The difference types of containers used in
+variables and container elements. The different types of containers used in
 Perl 6 are explained and the actions applicable to them like assigning, binding
 and flattening. More advanced topics like self-referential data, type
 constraints and custom containers are discussed at the end.