test: remove .only

Author: haoqunjiang

test/index.spec.ts

@@ -200,7 +200,7 @@ test('#102: should set configs correctly for paths with glob-like syntax (e.g. f
   expect(stdout).toMatch(WHITESPACE_ONLY)
 })
 
-test.only('(API before 14.3) should guide user to use camelCase names in "extends"', async () => {
+test('(API before 14.3) should guide user to use camelCase names in "extends"', async () => {
   const eslintConfigPath = path.join(__dirname, '../examples/api-before-14.3/eslint.config.js')
   const { modify, restore } = setupFileMutations(eslintConfigPath)
   modify((oldContents) => oldContents.replace('recommendedTypeChecked', 'recommended-type-checked'))