Update README.md for cardano-signer 1.17.0

Adding description of new CIP-100, CIP-108, CIP-119 hash/canonize 
option for governance metadata.

Switching to NODE.JS v18

README.md

@@ -1266,8 +1266,11 @@ And of course you can write out the plaintext or json output also directly to a
 ## Release Notes / Change-Logs
 
 * **1.17.0**
+  #### General
+     - Now using NODE.JS v18
+
   #### New Hash mode to Canonize & Hash Governance Metadata
-    - hash governance metadata following CIP-100, CIP-108, CIP-119 standard via the new `hash --cip100` option
+     - hash governance metadata following CIP-100, CIP-108, CIP-119 standard via the new `hash --cip100` option
 
 * **1.16.1**
   #### Catalyst Vote Key Generation CIP36