fix off by one error in template expansion

Author: myk002

.github/workflows/github-release.yml

@@ -50,7 +50,7 @@ jobs:
         head -n $((TOKEN_LINE - 1)) .github/release_template.md > release_body.md
         CHANGELOG_LINES=$(wc -l <$CHANGELOG_FILE)
         tail -n $((CHANGELOG_LINES - 3)) $CHANGELOG_FILE >> release_body.md
-        tail -n 2 .github/release_template.md >> release_body.md
+        tail -n 1 .github/release_template.md >> release_body.md
         cat release_body.md
     - name: Stage release
       uses: actions/download-artifact@v3