Update issue_template.md

.github/issue_template.md

@@ -1,10 +1,9 @@
 [Describe your issue]
 
-[**If you are using the `MASTER` branch, please check out the `DEV` branch before reporting any issue**]
-
 #### Check all that apply (change to `[x]`)
 - [ ] Windows
 - [ ] Mac OS X
 - [ ] Linux
+- [ ] Issue also occurs on the `dev` branch
 
 See https://libigl.github.io/CONTRIBUTING/#bugreport for more tips.