docs: fix filename in README · codeigniter4/shield@32d1ff7

Took 1.20s from 0.50s limit to run Tests\\Controllers\\RegisterTest::testRegisteredAndSessionExpiredAndLogin

Took 1.08s from 0.50s limit to run Tests\\Controllers\\RegisterTest::testRegisterRedirectsToActionIfDefined

Took 1.05s from 0.50s limit to run Tests\\Controllers\\RegisterTest::testRegisteredButNotActivatedAndRegisterAgain

Took 1.04s from 0.50s limit to run Tests\\Controllers\\RegisterTest::testRegisteredButNotActivatedAndLogin

Took 1.03s from 0.50s limit to run Tests\\Controllers\\RegisterTest::testRegisterActionSuccess

Took 0.93s from 0.50s limit to run Tests\\Controllers\\RegisterTest::testRegisterActionWithBadEmailValue

Took 0.85s from 0.50s limit to run Tests\\Unit\\UserIdentityModelTest::testForceMultiplePasswordReset

Took 0.84s from 0.50s limit to run Tests\\Unit\\PasswordsTest::testHash

Took 0.77s from 0.50s limit to run Tests\\Unit\\DictionaryValidatorTest::testCheckTrueOnNotFound

Took 0.66s from 0.50s limit to run Tests\\Authentication\\Authenticators\\JWTAuthenticatorTest::testLogin

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