modify issue template for Chinese translation, close #447

Author: ardenwick

.github/ISSUE_TEMPLATE/bug_report.md

@@ -10,10 +10,10 @@ assignees: ''
 <!-- Before filing a bug please check the following: -->
 <!-- * There's no existing/similar bug report. -->
 <!-- * This bug report is about a single actionable bug. -->
-<!-- * This bug is about the Pro Git book, version 2, English language. -->
-<!-- * This bug is about the book as found on the [website](https://www.git-scm.com/book/en/v2) or the pdf. -->
-<!-- * If you found a issue in the pdf/epub/mobi files, you've checked if the problem is also present in the Pro Git book on the [website](https://www.git-scm.com/book/en/v2). -->
-<!-- * This bug is **not** about a translation, if so please file a bug with the translation project. You can find a table of translation projects here: [progit2/TRANSLATING.md](https://github.com/progit/progit2/blob/master/TRANSLATING.md) -->
+<!-- * This bug is about the Pro Git book, version 2, Chinese language. -->
+<!-- * This bug is about the book as found on the [website](https://www.git-scm.com/book/zh/v2) or the pdf. -->
+<!-- * If you found a issue in the pdf/epub/mobi files, you've checked if the problem is also present in the Pro Git book on the [website](https://www.git-scm.com/book/zh/v2). -->
+<!-- * This bug is about Chinese translation. You can find a table of translation projects here: [progit2/TRANSLATING.md](https://github.com/progit/progit2/blob/master/TRANSLATING.md) -->
 <!-- * This bug is **not** about the git-scm.com site, if so please file a bug here: [git-scm.com/issues/new](https://github.com/git/git-scm.com/issues/new) -->
 <!-- * This bug is **not** about git the program itself, if so please file a bug here: [git-scm.com/community](https://git-scm.com/community) -->
 <!-- * This bug is **not** about Git for Windows, if so please file a bug here: [git-for-windows/git](https://github.com/git-for-windows/git). -->