Update title from "Solar System v3" to "Solar System v4" in index.html

Author: karimzakzouk

index.html

@@ -88,7 +88,7 @@
             padding: 20px;" placeholder="Enter a number(0 - 8) to view the planets"/> 
          </div>
          <div class="middle">
-            <h1 style="color:rgb(247, 145, 95); font-family: 'Encode Sans';" id="planetName"> Solar System v3 </h1>
+            <h1 style="color:rgb(247, 145, 95); font-family: 'Encode Sans';" id="planetName"> Solar System v4 </h1>
          </div>
          <div class="bottomleft">
             <p  style="color:rgb(224, 224, 224); font-family: 'Ubuntu';" id="planetDescription"> Solar system consists of our star, the Sun, and everything bound to it by gravity – <br> the planets Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune; <br> dwarf planets such as Pluto; dozens of moons; and millions <br> of asteroids, comets, and meteoroids.</p>