Fix vesting logic (#4864)

* Fix vesting logic

* Bump runtime version

* Docs.

substrate/bin/node/runtime/src/lib.rs

@@ -81,8 +81,8 @@ pub const VERSION: RuntimeVersion = RuntimeVersion {
 	// and set impl_version to 0. If only runtime
 	// implementation changes and behavior does not, then leave spec_version as
 	// is and increment impl_version.
-	spec_version: 214,
-	impl_version: 3,
+	spec_version: 215,
+	impl_version: 0,
 	apis: RUNTIME_API_VERSIONS,
 };