Fix indenting of 'Example' in the help message

Author: Juhyung Park

README.md

@@ -21,7 +21,7 @@ A command line CodeChain key management tool
     delete   : Delete the key of the given address
 
 
- Examples:
+  Examples:
 
     cckey create -t platform --passphrase "my password"
 

src/index.ts

@@ -27,7 +27,7 @@ commander.on("--help", () => {
 
     `);
 
-    console.log(` Examples:
+    console.log(`  Examples:
 
     cckey create -t platform --passphrase "my password"