sassafras: taplo happy (#2583)

fixes: `taplo format check`

substrate/frame/sassafras/Cargo.toml

@@ -16,12 +16,12 @@ targets = ["x86_64-unknown-linux-gnu"]
 [dependencies]
 scale-codec = { package = "parity-scale-codec", version = "3.6.1", default-features = false, features = ["derive"] }
 scale-info = { version = "2.5.0", default-features = false, features = ["derive"] }
-frame-benchmarking = { path = "../benchmarking", default-features = false, optional = true  }
-frame-support = { path = "../support", default-features = false  }
-frame-system = { path = "../system", default-features = false  }
+frame-benchmarking = { path = "../benchmarking", default-features = false, optional = true }
+frame-support = { path = "../support", default-features = false }
+frame-system = { path = "../system", default-features = false }
 log = { version = "0.4.17", default-features = false }
 sp-consensus-sassafras = { path = "../../primitives/consensus/sassafras", default-features = false, features = ["serde"] }
-sp-io = { path = "../../primitives/io", default-features = false  }
+sp-io = { path = "../../primitives/io", default-features = false }
 sp-runtime = { path = "../../primitives/runtime", default-features = false }
 sp-std = { path = "../../primitives/std", default-features = false }
 
@@ -30,7 +30,7 @@ array-bytes = "6.1"
 sp-core = { path = "../../primitives/core" }
 
 [features]
-default = [ "std" ]
+default = ["std"]
 std = [
 	"frame-benchmarking?/std",
 	"frame-support/std",