Fix typos and add GH action that checks them (#311)

* add typos workflow

* fix existing typos

* fix

evm-template/node/src/cli.rs

@@ -45,7 +45,7 @@ pub enum Subcommand {
 
     /// Try-runtime has migrated to a standalone
     /// [CLI](<https://github.com/paritytech/try-runtime-cli>). The subcommand exists as a stub and
-    /// deprecation notice. It will be removed entirely some time after Janurary
+    /// deprecation notice. It will be removed entirely some time after January
     /// 2024.
     TryRuntime,
 }

evm-template/node/src/eth.rs

@@ -30,7 +30,7 @@ pub fn db_config_dir(config: &Configuration) -> PathBuf {
     config.base_path.config_dir(config.chain_spec.id())
 }
 
-/// Avalailable frontier backend types.
+/// Available frontier backend types.
 #[derive(Debug, Copy, Clone, Default, clap::ValueEnum)]
 pub enum BackendType {
     /// Either RocksDb or ParityDb as per inherited from the global backend settings.