I18N: Capitalize translator comments consistently, add trailing punctuation.

Includes minor code layout fixes.

See #44360.
Built from https://develop.svn.wordpress.org/trunk@45932


git-svn-id: http://core.svn.wordpress.org/trunk@45743 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-admin/options.php

@@ -266,7 +266,7 @@ if ( 'update' == $action ) {
 					'options.php',
 					'2.7.0',
 					sprintf(
-						/* translators: %s: the option/setting */
+						/* translators: %s: The option/setting. */
 						__( 'The %s setting is unregistered. Unregistered settings are deprecated. See https://developer.wordpress.org/plugins/settings/settings-api/' ),
 						'<code>' . $option . '</code>'
 					)