Update ISSUE_TEMPLATE.md

ISSUE_TEMPLATE.md

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 Please before you submit your issue, make sure all the below can be checked (note if anything is expected, you can simply add it under the relevant checkbox)
 
-1) [ ] I have searched through the issue section and on [stackoverflow](http://stackoverflow.com/questions/tagged/smart-table?sort=newest&pageSize=30) if my issue has already been raised. 
-2) [ ] I have provided Angular version.
-3) [ ] I have provided Smart table version.
-4) [ ] I have set a precise description of my problem, mentioning the expected result.
-5) [ ] I have given a way to reproduce my issue, by providing a <strong>running example</strong>, I can use [plunkr](http://plnkr.co/). Note if you want to mimic ajax loading behaviour you can use [$timeout](https://docs.angularjs.org/api/ng/service/$timeout) angular service or [$httpBackend](https://docs.angularjs.org/api/ng/service/$httpBackend).
+- [ ] I have searched through the issue section and on [stackoverflow](http://stackoverflow.com/questions/tagged/smart-table?sort=newest&pageSize=30) if my issue has already been raised. 
+- [ ] I have provided Angular version.
+- [ ] I have provided Smart table version.
+- [ ] I have set a precise description of my problem, mentioning the expected result.
+- [ ] I have given a way to reproduce my issue, by providing a <strong>running example</strong>, I can use [plunkr](http://plnkr.co/). Note if you want to mimic ajax loading behaviour you can use [$timeout](https://docs.angularjs.org/api/ng/service/$timeout) angular service or [$httpBackend](https://docs.angularjs.org/api/ng/service/$httpBackend).
 
 Note that it not all the above checkbox can be marked as checked the issue will immediately be closed. Thanks for your understanding.