Update content1.html for all the experiment to make title unique

Author: khushpreet-kaur

src/lab/exp2/content1.html

@@ -192,7 +192,7 @@
 		<div class="header_cont"> <!-- 960px header-->
 			<!-- LOGO of the company-->
 			<div id="logo">
-			<h1> Experiment 2 </a> </h1>
+			<h1> Beauty of Numbers</a> </h1>
 			</div>
 
 		</div>

src/lab/exp3/content1.html

@@ -192,7 +192,7 @@
 		<div class="header_cont"> <!-- 960px header-->
 			<!-- LOGO of the company-->
 			<div id="logo">
-			<h1> Experiment 3 </a> </h1>
+			<h1> More on Numbers </a> </h1>
 			</div>
 
 		</div>

src/lab/exp4/content1.html

@@ -192,7 +192,7 @@
 		<div class="header_cont"> <!-- 960px header-->
 			<!-- LOGO of the company-->
 			<div id="logo">
-			<h1> Experiment 4 </h1>
+			<h1> Factorials </h1>
 			</div>
 
 		</div>

src/lab/exp5/content1.html

@@ -192,7 +192,7 @@
 		<div class="header_cont"> <!-- 960px header-->
 			<!-- LOGO of the company-->
 			<div id="logo">
-			<h1> Experiment 5 </h1>
+			<h1> String Operations </h1>
 			</div>
 
 		</div>