docs: update README

- Bumps the version in installation command → v0.1.1

Author: kikuomax

README.ja.md

@@ -9,7 +9,7 @@
 ## インストール
 
 ```sh
-npm install https://github.com/codemonger-io/cdk-ghost-string-parameter.git#v0.1.0
+npm install https://github.com/codemonger-io/cdk-ghost-string-parameter.git#v0.1.1
 ```
 
 ## サンプル
@@ -72,4 +72,4 @@ npm run build
 
 ```sh
 npm run build:doc
-```
+```

README.md

@@ -9,7 +9,7 @@ This library is supposed to be combined with the [AWS Cloud Development Kit (CDK
 ## Installation
 
 ```sh
-npm install https://github.com/codemonger-io/cdk-ghost-string-parameter.git#v0.1.0
+npm install https://github.com/codemonger-io/cdk-ghost-string-parameter.git#v0.1.1
 ```
 
 ## Example
@@ -72,4 +72,4 @@ npm run build
 
 ```sh
 npm run build:doc
-```
+```