[skip e2e]Update issue template (#17020)

Signed-off-by: Nzhuwenxing <wenxing.zhu@zilliz.com>

.github/ISSUE_TEMPLATE/bug_report.yaml

@@ -64,7 +64,6 @@ body:
   attributes:
     label: Milvus Log
     description: Detailed error log information is helpful for finding Milvus problems.  You can use this <a href="https://github.com/milvus-io/milvus/tree/master/deployments/export-log" target="_blank">script</a> to export Milvus logs.
-    render: markdown
   validations:
     required: false
 - type: textarea