feat: update about to reflect promotion

Author: rsmidt

layouts/index.html

@@ -16,7 +16,7 @@
         <div>
           <h1 class="text-4xl font-extrabold">Moin, I am Ruben Smidt.</h1>
           <p class="mt-3 text-lg text-gray-600">
-            I am a <span class="underline">Software Developer</span> with
+            I am a <span class="underline">Software Engineer</span> with
             expertise in full stack application engineering from start to
             finish. Besides my desk, you will find me on the tennis court, in my
             garden or paying <span class="underline">Bremen</span> downtown a