downloads: add links for OpenHarmony nightly

Signed-off-by: Mukilan Thiyagarajan <[email protected]>

Author: mukilan

_data/downloads.json

@@ -28,5 +28,11 @@
     "name": "Android (aarch64)",
     "href": "nightly/android/servo-latest.apk",
     "sha256": "nightly/android/servo-latest.apk.sha256"
+  },
+  {
+    "key": "ohos-aarch64-hap",
+    "name": "OpenHarmony (aarch64)",
+    "href": "nightly/ohos/servo-latest.hap",
+    "sha256": "nightly/ohos/servo-latest.hap.sha256"
   }
 ]

_includes/downloads-list.html

@@ -2,8 +2,8 @@
   {% for download in downloads %}
   <p>
     <div class="buttons has-addons">
-      <a rel="nofollow" role="button" class="button is-primary" href="https://download.servo.org/{{download.href}}" style="width: 17ch;">{{download.name}}</a>
-      <span class="button is-static" id="date-{{download.key}}" style="width: 12ch;">?</span>
+      <a rel="nofollow" role="button" class="button is-primary" href="https://download.servo.org/{{download.href}}" style="width: 22ch;">{{download.name}}</a>
+      <span class="button is-static" id="date-{{download.key}}" style="width: 10ch;">?</span>
       <a rel="nofollow" role="button" class="button" style="width: 7ch;" href="https://download.servo.org/{{download.sha256}}">sha256</a>
     </div>
   </p>