Use proper ellipsis and replace sparkle with rocket

Thanks to nextcloud/calendar

Signed-off-by: Daniel Kesselberg <mail@danielkesselberg.de>

.github/ISSUE_TEMPLATE/Feature_request.md

@@ -1,5 +1,5 @@
 ---
-name: ✨ Feature request
+name: 🚀 Feature request
 about: Suggest an idea for this project
 labels: enhancement, 0. Needs triage
 ---

.github/ISSUE_TEMPLATE/config.yml

@@ -2,7 +2,7 @@ blank_issues_enabled: false
 contact_links:
     - name: ❓ Question
       url: https://help.nextcloud.com/
-      about: I have a question ...
+      about: I have a question …
     - name: 🔒 Security Vulnerability
       url: https://hackerone.com/nextcloud
       about: Found a security vulnerability?