add the listing on text

Author: habibasorour

source/ch4_conditionals.ptx

@@ -13,7 +13,7 @@
 
 
         <p>
-            In Python the simple <c>if</c> statement is written as:
+            <xref ref="python-simple-if" text="type-global"/> shows how the simple <c>if</c> statement is written in Python. 
         </p>
 
         <listing xml:id="python-simple-if">
@@ -25,9 +25,9 @@ if score &gt;= 90:
             </code>
         </program>
         </listing>
-        
+
         <p>
-            In Java, this same pattern requires two changes: the condition must be in parentheses <c>()</c>, and the code block must be enclosed in curly braces <c>{}</c>.
+            <xref ref="java-simple-if" text="type-global"/> shows how the simple <c>if</c> statement is written in Java.
         </p>
         <listing xml:id="java-simple-if">
         <program interactive="activecode" language="java">