Formatting and stylistic cleanup

src/internal/shared/user-agent.ts

@@ -5,5 +5,5 @@ const packageJson = require('../../../package.json')
  * Ensure that this User Agent String is used in all HTTP calls so that we can monitor telemetry between different versions of this package
  */
 export function getUserAgentString(): string {
-    return `@actions/cache-${packageJson.version}`
+  return `@actions/cache-${packageJson.version}`
 }