fix: Fix rule import

Author: mskelton

src/index.ts

@@ -20,7 +20,7 @@ import noPagePause from './rules/no-page-pause'
 import noRawLocators from './rules/no-raw-locators'
 import noRestrictedMatchers from './rules/no-restricted-matchers'
 import noSkippedTest from './rules/no-skipped-test'
-import noSlowedTests from './rules/no-slowed-tests'
+import noSlowedTests from './rules/no-slowed-test'
 import noStandaloneExpect from './rules/no-standalone-expect'
 import noUnsafeReferences from './rules/no-unsafe-references'
 import noUselessAwait from './rules/no-useless-await'