made the Hello World in the paragraph capatalized

Author: habibasorour

source/ch2_firstjavaprogram.ptx

@@ -151,7 +151,7 @@
 <section xml:id="sec-lets-look-at-a-java-program">
     <title>Lets look at a Java Program</title>
     <p>
-        A time-honored tradition in Computer Science is to write a program called &#x201C;hello world.&#x201D; The &#x201C;hello world&#x201D; program is simple and easy.
+        A time-honored tradition in Computer Science is to write a program called &#x201C;Hello World.&#x201D; The &#x201C;Hello World&#x201D; program is simple and easy.
         There are no logic errors to make, so getting it to run relies only on understanding the syntax.
         To be clear, lets look at a &#x201C;complicated&#x201D; version of hello world for Python:
     </p>