update README wording

Author: ikuleshov

analyticsdata/README.md

@@ -30,8 +30,8 @@ from PHP.
 4.  **Install dependencies** via [Composer](http://getcomposer.org/doc/00-intro.md).
     Run `php composer.phar install` (if composer is installed locally) or `composer install`
     (if composer is installed globally).
-5.  **Replace `$property_id` variable** if present in the snippet and specify
-    the value of the GA4 property id you want to access.
+5.  **Replace `$property_id` variable** if present in the snippet with the
+value of the Google Analytics 4 property id you want to access.
 6.  **Run** with the command `php SNIPPET_NAME.php`. For example:
 ```sh
     $ php quickstart.php

analyticsdata/quickstart_oauth2/README.md

@@ -20,8 +20,8 @@ https://support.google.com/cloud/answer/6158849
 configuration dialog and save it as `oauth2.keys.json` in the same
 directory with this sample app.
 
-4. Uncomment `$property_id` variable below and specify the
-value of the GA4 property id you want to access.
+4. Replace `$property_id` variable with the value of the Google Analytics 4
+property id you want to access.
 
 5. Install the PHP bcmath extension (due to https://github.com/protocolbuffers/protobuf/issues/4465):