update outdated links

Author: RCasatta

Cargo.toml

@@ -6,10 +6,9 @@ version = "0.4.1"
 authors = ["Roman Zeyde <me@romanzey.de>"]
 description = "An efficient re-implementation of Electrum Server in Rust"
 license = "MIT"
-homepage = "https://github.com/romanz/electrs"
-repository = "https://github.com/romanz/electrs"
+homepage = "https://github.com/blockstream/electrs"
+repository = "https://github.com/blockstream/electrs"
 keywords = ["bitcoin", "electrum", "server", "index", "database"]
-documentation = "https://docs.rs/electrs/"
 readme = "README.md"
 edition = "2018"
 default-run = "electrs"