fix: update error message

---
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: passed
  - task: lint_javascript_cli
    status: na
  - task: lint_javascript_examples
    status: na
  - 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: na
  - task: lint_typescript_tests
    status: na
  - task: lint_license_headers
    status: passed
---

Author: kgryte

lib/node_modules/@stdlib/_tools/lint/pkg-json-names/lib/validate.js

@@ -69,7 +69,7 @@ function validate( opts, options ) {
 	if ( hasOwnProp( options, 'ignore' ) ) {
 		opts.ignore = options.ignore;
 		if ( !isString( opts.ignore ) && !isStringArray( opts.ignore ) ) {
-			return new TypeError( format( 'invalid option. `%s` option must be a string or array of strings. Option: `%s`.', 'ignore', opts.ignore ) );
+			return new TypeError( format( 'invalid option. `%s` option must be a string or an array of strings. Option: `%s`.', 'ignore', opts.ignore ) );
 		}
 	}
 	return null;