chore: fix JavaScript lint errors (issue #9301)

---
type: pre_commit_static_analysis_report
description: Results of running static analysis checks when committing changes.
report:
  - task: lint_filenames
    status: passed
  - task: lint_editorconfig
    status: passed
  - task: lint_markdown
    status: na
  - task: lint_package_json
    status: na
  - task: lint_repl_help
    status: na
  - task: lint_javascript_src
    status: na
  - task: lint_javascript_cli
    status: na
  - task: lint_javascript_examples
    status: passed
  - task: lint_javascript_tests
    status: na
  - task: lint_javascript_benchmarks
    status: na
  - task: lint_python
    status: na
  - task: lint_r
    status: na
  - task: lint_c_src
    status: na
  - task: lint_c_examples
    status: na
  - task: lint_c_benchmarks
    status: na
  - task: lint_c_tests_fixtures
    status: na
  - task: lint_shell
    status: na
  - task: lint_typescript_declarations
    status: passed
  - task: lint_typescript_tests
    status: na
  - task: lint_license_headers
    status: passed
---

Author: Rathodyashraj

lib/node_modules/@stdlib/_tools/bundle/pkg-list/examples/multiple-bundles-single-scope/index.js

@@ -20,10 +20,10 @@
 
 var join = require( 'path' ).join;
 var mkdirp = require( 'mkdirp' ).sync;
-var collapse = require( 'bundle-collapser/plugin' );
+var collapse = require( 'bundle-collapser/plugin.js' );
 var uglifyify = require( 'uglifyify' );
 var uglify = require( 'uglify-js' );
-var packFlat = require( 'browser-pack-flat/plugin' );
+var packFlat = require( 'browser-pack-flat/plugin.js' );
 var pkgNames = require( '@stdlib/_tools/pkgs/names' ).sync;
 var instanceOf = require( '@stdlib/assert/instance-of' );
 var writeFile = require( '@stdlib/fs/write-file' ).sync;