docs: fix by proofreading

Co-authored-by: John Paul E. Balandan, CPA <paulbalandan@gmail.com>

Author: kenjis

system/Config/Services.php

@@ -692,8 +692,8 @@ public static function session(?SessionConfig $config = null, bool $getShared =
         if (session_status() === PHP_SESSION_NONE) {
             // PHP Session emits the headers according to `session.cache_limiter`.
             // See https://www.php.net/manual/en/function.session-cache-limiter.php.
-            // The headers are not managed by the CI's Response class.
-            // So removes the CI's default Cache-Control header.
+            // The headers are not managed by CI's Response class.
+            // So, we remove CI's default Cache-Control header.
             AppServices::response()->removeHeader('Cache-Control');
 
             $session->start();