Update imagettftext.xml Add the literal tag (#4405)

* Update imagettftext.xml Add the literal tag

* Update imagettftext.xml Replace whitespaces

Author: mmalferov

reference/image/functions/imagettftext.xml

@@ -48,7 +48,7 @@
      <listitem>
       <para>
        The angle in degrees, with 0 degrees being left-to-right reading text.
-       Higher values represent a counter-clockwise rotation. For example, a 
+       Higher values represent a counter-clockwise rotation. For example, a
        value of 90 would result in bottom-to-top reading text.
       </para>
      </listitem>
@@ -94,12 +94,12 @@
       </para>
       <para>
        May include decimal numeric character references (of the form:
-       &amp;#8364;) to access characters in a font beyond position 127.
-       The hexadecimal format (like &amp;#xA9;) is supported.
+       <literal>&amp;#8364;</literal>) to access characters in a font beyond position 127.
+       The hexadecimal format (like <literal>&amp;#xA9;</literal>) is supported.
        Strings in UTF-8 encoding can be passed directly.
       </para>
       <para>
-       Named entities, such as &amp;copy;, are not supported. Consider using 
+       Named entities, such as <literal>&amp;copy;</literal>, are not supported. Consider using
        <function>html_entity_decode</function>
        to decode these named entities into UTF-8 strings.
       </para>
@@ -116,9 +116,9 @@
   &reftitle.returnvalues;
   <para>
    Returns an array with 8 elements representing four points making the
-   bounding box of the text. The order of the points is lower left, lower 
+   bounding box of the text. The order of the points is lower left, lower
    right, upper right, upper left. The points are relative to the text
-   regardless of the angle, so "upper left" means in the top left-hand 
+   regardless of the angle, so "upper left" means in the top left-hand
    corner when you see the text horizontally.
    Returns &false; on error.
   </para>
@@ -158,6 +158,7 @@
     <programlisting role="php">
 <![CDATA[
 <?php
+
 // Set the content-type
 header('Content-Type: image/png');
 
@@ -172,6 +173,7 @@ imagefilledrectangle($im, 0, 0, 399, 29, $white);
 
 // The text to draw
 $text = 'Testing...';
+
 // Replace path by your own font path
 $font = 'arial.ttf';
 
@@ -183,6 +185,7 @@ imagettftext($im, 20, 0, 10, 20, $black, $font, $text);
 
 // Using imagepng() results in clearer text compared with imagejpeg()
 imagepng($im);
+
 ?>
 ]]>
     </programlisting>