I18N: Add translator comments to three _doing_it_wrong() messages added for 4.3 and 4.4.

Also adds a full-stop to an invalid taxonomy message introduced in [34745] and later modified in [35428] for `wp_insert_post()`.

Props pavelevap.
Fixes #34249.

Built from https://develop.svn.wordpress.org/trunk@35542


git-svn-id: http://core.svn.wordpress.org/trunk@35506 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-includes/shortcodes.php

@@ -96,6 +96,7 @@ function add_shortcode($tag, $func) {
 	}
 
 	if ( 0 !== preg_match( '@[<>&/\[\]\x00-\x20]@', $tag ) ) {
+		/* translators 1: shortcode name */
 		$message = sprintf( __( 'Invalid shortcode name: %s. Do not use spaces or reserved characters: & / < > [ ]' ), $tag );
 		_doing_it_wrong( __FUNCTION__, $message, '4.4.0' );
 		return;
@@ -314,6 +315,7 @@ function do_shortcode_tag( $m ) {
 	$attr = shortcode_parse_atts( $m[3] );
 
 	if ( ! is_callable( $shortcode_tags[ $tag ] ) ) {
+		/* translators: 1: shortcode tag */
 		$message = sprintf( __( 'Attempting to parse a shortcode without a valid callback: %s' ), $tag );
 		_doing_it_wrong( __FUNCTION__, $message, '4.3.0' );
 		return $m[0];