Update tech-report.md

Author: rviscomi

.github/ISSUE_TEMPLATE/tech-report.md

@@ -3,7 +3,7 @@ name: Tech Report
 about: Raise an issue or feature request related to the HTTP Archive Tech Report
 title: 'Tech Report: '
 labels: Tech Report
-assignees: rviscomi, sarahfossheim
+assignees: tunetheweb, sarahfossheim
 
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