rename fg-primitives to more verbose name (#1123)

substrate/node/runtime/wasm/Cargo.lock

@@ -526,7 +526,7 @@ dependencies = [
  "srml-treasury 0.1.0",
  "srml-upgrade-key 0.1.0",
  "substrate-client 0.1.0",
- "substrate-fg-primitives 0.1.0",
+ "substrate-finality-grandpa-primitives 0.1.0",
  "substrate-primitives 0.1.0",
 ]
 
@@ -1274,7 +1274,7 @@ dependencies = [
 ]
 
 [[package]]
-name = "substrate-fg-primitives"
+name = "substrate-finality-grandpa-primitives"
 version = "0.1.0"
 dependencies = [
  "parity-codec 2.1.5 (registry+https://github.com/rust-lang/crates.io-index)",