correct spelling.

Fixes gitpod-io/website#833

Author: nisarhassan12

src/components/Footer.tsx

@@ -196,7 +196,7 @@ const Footer: React.SFC<{}> = () => (
                                 height="28.016"
                                 viewBox="0 0 28.748 28.016"
                             >
-                                <title>Github</title>
+                                <title>GitHub</title>
                                 <path
                                     d="M14.372 0a14.362 14.362 0 00-4.54 27.991c.718.133.949-.312.949-.691v-2.674c-4 .867-4.827-1.695-4.827-1.695a3.8 3.8 0 00-1.6-2.106c-1.3-.892.1-.873.1-.873a3.015 3.015 0 012.2 1.481 3.057 3.057 0 004.179 1.2 3.047 3.047 0 01.912-1.915c-3.19-.369-6.543-1.6-6.543-7.1a5.558 5.558 0 011.485-3.86 5.166 5.166 0 01.145-3.8s1.2-.385 3.95 1.472a13.613 13.613 0 017.192 0c2.742-1.858 3.95-1.472 3.95-1.472a5.161 5.161 0 01.141 3.8 5.544 5.544 0 011.478 3.855c0 5.516-3.36 6.731-6.558 7.087a3.433 3.433 0 01.978 2.659V27.3c0 .382.23.831.957.689A14.362 14.362 0 0014.372 0z"
                                 ></path>