Website: Update greyscale image filenames on homepage (#16115)

Changes:
- Updated the filenames of images that were replaced with greyscale
versions.

website/views/pages/homepage.ejs

@@ -143,43 +143,43 @@
       <h2>An open API for every endpoint</h2>
       <div class="card-deck d-flex flex-row flex-wrap justify-content-center mx-auto">
           <div purpose="supported-platform" class="">
-            <img alt="Linux" src="/images/homepage-platform-linux-41x48@2x.png">
+            <img alt="Linux" src="/images/homepage-platform-greyscale-linux-41x48@2x.png">
             <p>Linux <br><span>(all distros)</span></p>
           </div>
           <div purpose="supported-platform">
-            <img alt="macOS" src="/images/homepage-platform-macos-42x48@2x.png">
+            <img alt="macOS" src="/images/homepage-platform-greyscale-macos-42x48@2x.png">
             <p>macOS</p>
           </div>
           <div purpose="supported-platform">
-            <img alt="Windows" src="/images/homepage-platform-windows-40x48@2x.png">
+            <img alt="Windows" src="/images/homepage-platform-greyscale-windows-40x48@2x.png">
             <p>Windows</p>
           </div>
           <div purpose="supported-platform">
-            <img alt="ChromeOS" src="/images/homepage-platform-chromeos-48x48@2x.png">
+            <img alt="ChromeOS" src="/images/homepage-platform-greyscale-chromeos-48x48@2x.png">
             <p>Chromebook</p>
           </div>
           <div purpose="supported-platform" class="">
-            <img alt="AWS" src="/images/homepage-platform-aws-54x48@2x.png">
+            <img alt="AWS" src="/images/homepage-platform-greyscale-aws-54x48@2x.png">
             <p>AWS</p>
           </div>
           <div purpose="supported-platform" class="">
-            <img alt="Google Cloud" src="/images/homepage-platform-google-cloud-48x48@2x.png">
+            <img alt="Google Cloud" src="/images/homepage-platform-greyscale-google-cloud-48x48@2x.png">
             <p>GCP</p>
           </div>
           <div purpose="supported-platform">
-            <img alt="Azure" src="/images/homepage-platform-azure-24x24@2x.png">
+            <img alt="Azure" src="/images/homepage-platform-greyscale-azure-24x24@2x.png">
             <p>Azure <br><span>(Microsoft Cloud)</span></p>
           </div>
           <div purpose="supported-platform">
-            <img alt="Datacenters" src="/images/homepage-platform-datacenters-48x48@2x.png">
+            <img alt="Datacenters" src="/images/homepage-platform-greyscale-datacenters-48x48@2x.png">
             <p>Data centers</p>
           </div>
           <div purpose="supported-platform">
-            <img alt="Containers" src="/images/homepage-platform-docker-48x48@2x.png">
+            <img alt="Containers" src="/images/homepage-platform-greyscale-docker-48x48@2x.png">
             <p>Containers</p>
           </div>
           <div purpose="supported-platform" class="">
-            <img alt="IOT" src="/images/homepage-platform-iot-38x48@2x.png">
+            <img alt="IOT" src="/images/homepage-platform-greyscale-iot-38x48@2x.png">
             <p>IoT devices <br><span>(Linux-based)</span></p>
           </div>
       </div>