Update ISSUE_TEMPLATE.md

.github/ISSUE_TEMPLATE.md

@@ -1,5 +1,5 @@
 - [ ] goldmark is fully compliant with the CommonMark. Before submitting issue, you **must** read [CommonMark spec](https://spec.commonmark.org/0.29/) and confirm your output is different from [CommonMark online demo](https://spec.commonmark.org/dingus/).
-    - [ ] **Extensions(Autolink without `<` `>`, Table, etc) are not part of CommonMark spec.** You should confirm your out is different from other official renderers correspond with an extension.
+    - [ ] **Extensions(Autolink without `<` `>`, Table, etc) are not part of CommonMark spec.** You should confirm your output is different from other official renderers correspond with an extension.
 - [ ] **goldmark is not dedicated for Hugo**. If you are Hugo user and your issue was raised by your experience in Hugo, **you should consider create issue at Hugo repository at first** .
 - [ ] Before you make a feature request, **you should consider implement the new feature as an extension by yourself** . To keep goldmark itself simple, most new features should be implemented as an extension.
 
@@ -13,3 +13,5 @@ Please answer the following before submitting your issue:
 6. What did you see instead? :
 7. Did you confirm your output is different from [CommonMark online demo](https://spec.commonmark.org/dingus/) or other official renderer correspond with an extension?:
 8. (Feature request only): Why you can not implement it as an extension?:
+    - You should avoid saying like "I'm not familiar with this project" "I'm not a Go programmer" as far as possible. This is an open source project and a library for Go programmers. I encourage you to strive to read source codes. 
+    - I absolutely welcome questions that are difficult even if you read the source codes.