Simplifying icon request template name (to avoid redundancy)

We already add an "icon request" label and have these in the "Icon Request" category. Have "Icon Request" in the title felt redundant and unnecessarily noisy.

.github/DISCUSSION_TEMPLATE/icon-requests.yml

@@ -1,4 +1,4 @@
-title: "Icon Request: "
+title: "[Icon Name] Icon"
 labels:
   - "icon request"
   - "new icon"
@@ -57,4 +57,4 @@ body:
         - label: "I searched existing Discussions/Issues to avoid duplicates"
           required: true
         - label: "I understand how icon requests work and what makes one more likely to be accepted"
-          required: true
+          required: true