Update config.md

Author: bryannielsen

docs/config/config.md

@@ -9,39 +9,39 @@
 
 # Main Configuration File
 
-The main configuration settings are stored in the for of PHP array in `system/user/config/config.php` file.
+The main configuration settings are stored in the form of a PHP array in the `system/user/config/config.php` file.
 
 This file is populated automatically during the installation process and contains the most important settings that are used by ExpressionEngine.
 
-The main configuration file is being loaded every time the system is run, meaning that [config overrides](general/system-configuration-overrides.md) set in `config.php`` always affect the system’s configuration.
+Settings from this file are loaded every time the system is run. This means that [config overrides](general/system-configuration-overrides.md) set in `config.php` always affect the system’s configuration.
 
-At the minimum, the configuration file contains the following settings:
+At a minimum, this configuration file contains the following settings:
 
 #### `app_version`
 
 The installation's ExpressionEngine version. This value is set automatically and normally should not be modified. 
 
-However  if for a certain reason you need to run the update script again, you can change this value to a lower version number so the system would "see" the update available.
+However if you need to run an update script again, you can modify this value to a lower version number so the system would "see" the update(s) available.
 
     $config['app_version'] = '7.4.0';
 
 #### `encryption_key`
 
-This is the secret key used by the [Encrypt service](development/services/encrypt.md) to protected sensitive data in the database. It is set automatically during the installation process. If you need to use your own key please refer to [Troubleshooting guide](troubleshooting/error-messages.md#generating-new-encryption-keys) on how to generate a new one.
+This is the secret key used by the [Encrypt service](development/services/encrypt.md) to protect sensitive data in the database. It is set automatically during the installation process. If you need to use your own key please refer to [Troubleshooting guide](troubleshooting/error-messages.md#generating-new-encryption-keys) on how to generate a new one.
 
     $config['encryption_key'] = '26791dcd5c7cc9e569cc05b16b96235985cc9f03';
 
 #### `session_crypt_key`
 
-Similar to `encryption_key`, but used to protected session data.
+Similar to the `encryption_key`, but used to protected session data.
 
     $config['session_crypt_key'] = 'd9e776dc9a5de0cd83e7c76a76756daa64ff4b8b';
 
 #### `database`
 
-This is probably most important setting in the configuration file. It contains the database connection details. The array is required to have element with key `expressionengine`, which in turn needs to be array with the following keys:
+The database connection details are one of the most important settings in the configuration file.  The array is required to have an element with a key of `expressionengine`, which in turn needs to be an array with the following keys:
 
- - `hostname` - The hostname or IP address of database server
+ - `hostname` - The hostname or IP address of your database server
  - `database` - The name of the database to connect to
  - `username` - The username used to connect to the database
  - `password` - The password used to connect to the database
@@ -69,7 +69,7 @@ In addition, you can use following keys inside `expressionengine`:
 
  - `pconnect` - Whether to use persistent connections (default is `true`)
 
-The following keys can be specified that will be converted to [PDO constants](https://www.php.net/manual/en/ref.pdo-mysql.php#pdo-mysql.constants) and passed to the database driver:
+The following keys can be specified and will be converted to [PDO constants](https://www.php.net/manual/en/ref.pdo-mysql.php#pdo-mysql.constants) when passed to the database driver:
 
  - `MYSQL_ATTR_LOCAL_INFILE`
  - `MYSQL_ATTR_LOCAL_INFILE_DIRECTORY`
@@ -83,4 +83,4 @@ The following keys can be specified that will be converted to [PDO constants](ht
  - `MYSQL_ATTR_SSL_CERT`
  - `MYSQL_ATTR_SSL_CIPHER`
  - `MYSQL_ATTR_SSL_KEY`
- - `MYSQL_ATTR_SSL_VERIFY_SERVER_CERT`
+ - `MYSQL_ATTR_SSL_VERIFY_SERVER_CERT`