Update post-install.txt (#1592)

* Update post-install.txt

Minor typos

* Update post-install.txt

* Update Acceptance.suite.yml

Aligning to https://github.com/Codeception/Codeception/pull/6735

codeception/codeception/5.0/post-install.txt

@@ -1,13 +1,13 @@
-File codeception.yml created        <- Global configuration
-tests/Unit created                  <- Unit tests
-tests/Unit.suite.yml written        <- Unit tests suite configuration
-tests/Functional created            <- Functional tests
-tests/Functional.suite.yml written  <- Functional tests suite configuration
-tests/Acceptance created            <- Acceptance tests
-tests/Acceptance.suite.yml written  <- Acceptance tests suite configuration
+codeception.yml written             <- Global configuration
+tests/Unit/ created                 <- Unit tests
+tests/Unit.suite.yml written        <- Unit test suite configuration
+tests/Functional/ created           <- Functional tests
+tests/Functional.suite.yml written  <- Functional test suite configuration
+tests/Acceptance/ created           <- Acceptance tests
+tests/Acceptance.suite.yml written  <- Acceptance test suite configuration
 <info>Codeception is installed for acceptance, functional, and unit testing</>
 <options=bold>Next steps:</>
-1. Edit <options=bold>tests/Functional.suite.yml</> to enable Doctrine module if needed
+1. Edit <options=bold>tests/Functional.suite.yml</> to enable the Doctrine module if needed
 2. Create your first acceptance test using <comment>vendor/bin/codecept generate:cest Acceptance First</>
 3. Write your first test in <options=bold>tests/Acceptance/FirstCest.php</>
 4. Run tests using: <comment>vendor/bin/codecept run</>

codeception/codeception/5.0/tests/Acceptance.suite.yml

@@ -1,15 +1,14 @@
-# Codeception Test Suite Configuration
+# Codeception Acceptance Test Suite Configuration
 #
-# Suite for acceptance tests.
-# Perform tests in browser using the WebDriver or PhpBrowser.
-# If you need both WebDriver and PHPBrowser tests - create a separate suite.
+# Perform tests in a browser by either emulating one using PhpBrowser, or in a real browser using WebDriver.
+# If you need both WebDriver and PhpBrowser tests, create a separate suite for each.
 
 actor: AcceptanceTester
 modules:
     enabled:
         - PhpBrowser:
             url: https://localhost:8000
-# add Codeception\Step\Retry trait to AcceptanceTester to enable retries
+# Add Codeception\Step\Retry trait to AcceptanceTester to enable retries
 step_decorators:
     - Codeception\Step\ConditionalAssertion
     - Codeception\Step\TryTo