Corrected filename of resource for problem 59

Author: iKevinY

EulerPy/data/resources.json

@@ -2,7 +2,7 @@
   "22": "names.txt",
   "42": "words.txt",
   "54": "poker.txt",
-  "59": "cypher1.txt",
+  "59": "cipher1.txt",
   "67": "triangle.txt",
   "79": "keylog.txt",
   "81": "matrix.txt",