Docs: Revise comments using “we” in WordPress root directory files.

This updates some inline comments to better match the guidelines and recommendations set forth in the make/core and make/docs handbooks:

> In general, use second person in your documentation. Second person depicts a friendly tone, with a perfect focus on the reader. In addition to this, directly addressing the reader helps avoid passive voice; thereby preventing unwanted confusion.
> ...
> the word “we” should be avoided (...) unless its made very clear which group is speaking.

Includes:
* Replacing first-person usage of "we" with second person point of view.
* Making small clarification adjustments where the voice is much too casual or lacks clear context, especially for non-native English speakers.

References:
* [https://make.wordpress.org/docs/style-guide/language-grammar/grammatical-person/ Style Guide: Grammatical person]
* [https://make.wordpress.org/docs/handbook/documentation-team-handbook/handbooks-style-and-formatting-guide/ Handbooks & HelpHub Style and Formatting Guide]
* [https://make.wordpress.org/core/handbook/best-practices/post-comment-guidelines/#style-and-substance Post & Comment Guidelines: Style and Substance]

Follow-up to [2176], [3430], [4676], [6009], [7991], [12688], [12762], [26008], [28978], [44488], [44962], [51979], [53131], [53132], [53156], [53131], [54200].

Props ironprogrammer, costdev, jorbin, SergeyBiryukov.
See #57052.

git-svn-id: https://develop.svn.wordpress.org/trunk@54866 602fd350-edb4-49c9-b593-d223f7449a82

src/wp-settings.php

@@ -19,8 +19,8 @@ define( 'WPINC', 'wp-includes' );
  * Version information for the current WordPress release.
  *
  * These can't be directly globalized in version.php. When updating,
- * we're including version.php from another installation and don't want
- * these values to be overridden if already set.
+ * include version.php from another installation and don't override
+ * these values if already set.
  *
  * @global string $wp_version             The WordPress version string.
  * @global int    $wp_db_version          WordPress database version.
@@ -60,7 +60,7 @@ global $blog_id;
 // Set initial default constants including WP_MEMORY_LIMIT, WP_MAX_MEMORY_LIMIT, WP_DEBUG, SCRIPT_DEBUG, WP_CONTENT_DIR and WP_CACHE.
 wp_initial_constants();
 
-// Make sure we register the shutdown handler for fatal errors as soon as possible.
+// Register the shutdown handler for fatal errors as soon as possible.
 wp_register_fatal_error_handler();
 
 // WordPress calculates offsets from UTC.
@@ -70,13 +70,13 @@ date_default_timezone_set( 'UTC' );
 // Standardize $_SERVER variables across setups.
 wp_fix_server_vars();
 
-// Check if we're in maintenance mode.
+// Check if the site is in maintenance mode.
 wp_maintenance();
 
 // Start loading timer.
 timer_start();
 
-// Check if we're in WP_DEBUG mode.
+// Check if WP_DEBUG mode is enabled.
 wp_debug_mode();
 
 /**
@@ -145,7 +145,7 @@ if ( is_multisite() ) {
 
 register_shutdown_function( 'shutdown_action_hook' );
 
-// Stop most of WordPress from being loaded if we just want the basics.
+// Stop most of WordPress from being loaded if SHORTINIT is enabled.
 if ( SHORTINIT ) {
 	return false;
 }