Update algorithm.md

Author: zspitzer

docs/03.reference/01.functions/generatesecretkey/_arguments/algorithm.md

@@ -1 +1,23 @@
-The encryption algorithm for which to generate the key.
+The encryption algorithm for which to generate the key.
+
+The available algorithms (depending on your JVM) are 
+
+- HmacSHA3-224
+- HmacSHA384
+- HmacSHA512/224
+- HmacSHA512
+- HmacSHA512/256
+- HmacSHA3-512
+- HmacSHA3-256
+- HmacSHA3-384
+- HmacSHA224
+- ARCFOUR
+- Blowfish
+- HmacSHA256
+- HmacSHA1
+- AES
+- HmacMD5
+- DESede
+- DES
+- RC2
+- ChaCha20