docs: update README.md.template to fix a typo (#5505)

codegen/smithy-aws-typescript-codegen/src/main/resources/software/amazon/smithy/aws/typescript/codegen/README.md.template

@@ -9,7 +9,7 @@ AWS SDK for JavaScript ${serviceId} Client for Node.js, Browser and React Native
 ${documentation}
 
 ## Installing
-To install the this package, simply type add or install ${packageName}
+To install this package, simply type add or install ${packageName}
 using your favorite package manager:
 - `npm install ${packageName}`
 - `yarn add ${packageName}`
@@ -195,4 +195,4 @@ To contribute to client you can check our [generate clients scripts](https://git
 
 This SDK is distributed under the
 [Apache License, Version 2.0](http://www.apache.org/licenses/LICENSE-2.0),
-see LICENSE for more information.
+see LICENSE for more information.