fix wiki link

diff --git a/docs/Reference/Preprocessor.mdr b/docs/Reference/Preprocessor.mdr
index 6ac642c9f096590a2a416cab697de6780f209507..94317385006c61cc3b7c5f9a0b887aae7d239e85 100644 (file)
--- a/docs/Reference/Preprocessor.mdr
+++ b/docs/Reference/Preprocessor.mdr
@@ -2,7 +2,7 @@
 
 ## Memoization
 
-You can use the `memoize` pragma to enable [memoization](wikipedia.org/wiki/Memoization) on functions:
+You can use the `memoize` pragma to enable [memoization](https://wikipedia.org/wiki/Memoization) on functions:
 
 ### normal version