Update to avoid repetition of terms

Signed-off-by: Alex Ellis (OpenFaaS Ltd) <alexellis2@gmail.com>

Author: alexellis

_includes/testimonials.html

@@ -2,7 +2,7 @@
     <div class="max-w-7xl mx-auto px-4 sm:px-6 lg:px-8">
         <div class="max-w-3xl mx-auto text-center">
             <h3 class="text-3xl leading-8 font-extrabold tracking-tight text-gray-900 sm:text-4xl sm:leading-10">
-                Trusted by teams shipping real traffic
+                What customers are saying
             </h3>
             <p class="mt-4 text-xl leading-7 text-gray-500">
                 Developers use inlets for previews, webhooks and local clusters. SaaS teams use it to reach private customer environments without another VPN project.