Finish draft of part 11 of compiler series

content/blog/10_compiler_polymorphism.md

@@ -777,6 +777,6 @@ While this is a major success, we are not yet done. Although our functions can n
 have polymorphic types, the same cannot be said for our data types! We want to
 have lists of integers __and__ lists of booleans, without having to duplicate any code!
 While this also falls into the category of polymorphism, this post has already gotten very long,
-and we will return to it in the near future. Once we're done with that, I still intend
+and we will return to it in [part 11]({{< relref "11_compiler_polymorphic_data_types.md" >}}). Once we're done with that, I still intend
 to go over `let/in` expressions, __lambda functions__, and __Input/Output__ together with
-__strings__. See you in these future posts!
+__strings__.