testing(check-examples): avoid absolute path for matchingFileName and avoid use of dummy file

Author: brettz9

README.md

@@ -689,7 +689,7 @@ function quux () {}
 function quux2 () {
 
 }
-// Settings: {"jsdoc":{"matchingFileName":"test/rules/data/dummyfile.js"}}
+// Settings: {"jsdoc":{"matchingFileName":"test/rules/data/dummy.js"}}
 // Message: @example error (semi): Missing semicolon.
 
 /**

src/rules/checkExamples.js

@@ -159,6 +159,7 @@ export default iterateJsdoc(({
 
       linter.defineRules(linterRules);
 
+      // Could also support `disableFixes` and `allowInlineConfig`
       messages = linter.verify(source, config, {
         filename,
         reportUnusedDisableDirectives

test/rules/assertions/checkExamples.js

@@ -1,11 +1,5 @@
 /* eslint-disable no-restricted-syntax */
 
-// After `importMeta` no longer experimental, we can use this ESM
-//   approach over `__dirname`?
-// import {fileURLToPath} from 'url';
-// import {join, dirname} from 'path';
-// join(dirname(fileURLToPath(import.meta.url)), 'babel-eslint')
-
 export default {
   invalid: [
     {
@@ -320,7 +314,7 @@ export default {
       ],
       settings: {
         jsdoc: {
-          matchingFileName: require.resolve('../data/test.js')
+          matchingFileName: 'test/rules/data/dummy.js'
         }
       }
     },