Update and rename -u0001f680-feature-request.md to feature-request.md

.github/ISSUE_TEMPLATE/-u0001f680-feature-request.md → .github/ISSUE_TEMPLATE/feature-request.md

@@ -1,5 +1,5 @@
 ---
-name: "\\U0001F680 Feature request"
+name: "\U0001F680 Feature request"
 about: Suggest an idea for milvus-sdk-java
 title: "[FEATURE]"
 labels: ''