Fixed reference URL for Base64.
The reference page for Base64 can't use to jump.
Because that URL already changed.
I fixed this URL to "https://www.leeholmes.com/searching-for-content-in-base-64-strings/".
@@ -463,7 +463,7 @@ Base64 strings
The ``base64`` modifier can be used to search for strings that have been base64
encoded. A good explanation of the technique is at:
-https://www.leeholmes.com/blog/2019/12/10/searching-for-content-in-base-64-strings-2/
+https://www.leeholmes.com/searching-for-content-in-base-64-strings/
The following rule will search for the three base64 permutations of the string
"This program cannot":
