Fix extensions in test headers

__tests__/index.test.js

@@ -1,5 +1,5 @@
 /**
- * Unit tests for the action's entrypoint, src/index.ts
+ * Unit tests for the action's entrypoint, src/index.js
  */
 
 const { run } = require('../src/main')

__tests__/main.test.js

@@ -1,9 +1,5 @@
 /**
- * Unit tests for the action's main functionality, src/main.ts
- *
- * These should be run as if the action was called from a workflow.
- * Specifically, the inputs listed in `action.yml` should be set as environment
- * variables following the pattern `INPUT_<INPUT_NAME>`.
+ * Unit tests for the action's main functionality, src/main.js
  */
 const core = require('@actions/core')
 const main = require('../src/main')

__tests__/wait.test.js

@@ -1,5 +1,5 @@
 /**
- * Unit tests for src/wait.ts
+ * Unit tests for src/wait.js
  */
 const { wait } = require('../src/wait')
 const { expect } = require('@jest/globals')