Update docs (#13391)

Co-authored-by: sglang-bot <sglangbot@gmail.com>

.github/ISSUE_TEMPLATE/1-bug-report.yml

@@ -1,5 +1,5 @@
 name: 🐞 Bug report
-description: Create a report to help us reproduce and fix the bug
+description: Report a bug to help us reproduce and fix it.
 title: "[Bug] "
 labels: ['Bug']
 
@@ -8,31 +8,28 @@ body:
   attributes:
     label: Checklist
     options:
-    - label: 1. I have searched related issues but cannot get the expected help.
-    - label: 2. The bug has not been fixed in the latest version.
-    - label: 3. Please note that if the bug-related issue you submitted lacks corresponding environment info and a minimal reproducible demo, it will be challenging for us to reproduce and resolve the issue, reducing the likelihood of receiving feedback.
-    - label: 4. If the issue you raised is not a bug but a question, please raise a discussion at https://github.com/sgl-project/sglang/discussions/new/choose Otherwise, it will be closed.
-    - label: 5. Please use English, otherwise it will be closed.
+      - label: I searched related issues but found no solution.
+      - label: The bug persists in the latest version.
+      - label: Issues without environment info and a minimal reproducible demo are hard to resolve and may receive no feedback.
+      - label: If this is not a bug report but a general question, please start a discussion at https://github.com/sgl-project/sglang/discussions. Otherwise, it will be closed.
+      - label: Please use English. Otherwise, it will be closed.
 - type: textarea
   attributes:
     label: Describe the bug
-    description: A clear and concise description of what the bug is.
+    description: A clear, concise description of the bug.
   validations:
     required: true
 - type: textarea
   attributes:
     label: Reproduction
-    description: |
-      What command or script did you run? Which **model** are you using?
-    placeholder: |
-      A placeholder for the command.
+    description: Command/script run and model used.
+    placeholder: Paste the command here.
   validations:
     required: true
 - type: textarea
   attributes:
     label: Environment
-    description: |
-      Please provide necessary environment information here with `python3 -m sglang.check_env`. Otherwise the issue will be closed.
-    placeholder: Environment here.
+    description: Run `python3 -m sglang.check_env` and paste output here. Issues without this will be closed.
+    placeholder: Paste environment output here.
   validations:
     required: true