bin/tau: update cargo's package description

bin/tau/taud/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "taud"
-description = "Encrypted tasks management app using peer-to-peer network and raft consensus."
+description = "Encrypted tasks management app using peer-to-peer network and Event Graph."
 version = "0.4.1"
 edition = "2021"
 authors = ["Dyne.org foundation <foundation@dyne.org>"]