Update readme link

Author: tcharding

client/Cargo.toml

@@ -12,7 +12,7 @@ repository = "https://github.com/tcharding/rust-bitcoind-json-rpc"
 description = "Bitcoin Core JSON-RPC client"
 categories = ["cryptography::cryptocurrencies"]
 keywords = ["bitcoin", "bitcoind", "json-rpc"]
-readme = "../README.md"
+readme = "README.md"
 edition = "2021"
 rust-version = "1.56.1"
 exclude = ["tests", "contrib"]

json/Cargo.toml

@@ -12,7 +12,7 @@ repository = "https://github.com/tcharding/rust-bitcoind-json-rpc"
 description = "Bitcoin Core JSON-RPC API types"
 categories = ["cryptography::cryptocurrencies"]
 keywords = ["bitcoin", "bitcoind", "json-rpc"]
-readme = "../README.md"
+readme = "README.md"
 edition = "2021"
 rust-version = "1.56.1"
 exclude = ["tests", "contrib"]

regtest/Cargo.toml

@@ -7,7 +7,7 @@ repository = "https://github.com/tcharding/rust-bitcoind-json-rpc"
 description = "Utility to run a regtest bitcoind process, useful in integration testing environments"
 categories = ["cryptography::cryptocurrencies", "development-tools::testing"]
 keywords = ["bitcoin", "bitcoind", "json-rpc"]
-readme = "../README.md"
+readme = "README.md"
 edition = "2021"
 rust-version = "1.56.1"
 exclude = ["tests", "contrib"]