Update issue templates

Author: alesbe

.github/ISSUE_TEMPLATE/bug_report.md

@@ -8,16 +8,16 @@ assignees: ''
 ---
 
 ## Describe you problem:
-<replace me>
+*replace me*
 
 ## Steps to reproduce (optional):
-<replace me>
+*replace me*
 
 ## Additional info (optional):
-<replace me>
+*replace me*
 
 ## Possible fix (optional):
-<replace me>
+*replace me*
 
 ## OS
 - [ ] : Windows

.github/ISSUE_TEMPLATE/documentation.md

@@ -0,0 +1,17 @@
+---
+name: Documentation
+about: Suggest a change in the documentation
+title: "[DOC]: <replace me>"
+labels: documentation, needs triage
+assignees: ''
+
+---
+
+## Which part of the documentation?
+- [x]  Wiki
+- [ ] Readme
+- [ ] Code comments
+- [ ] Others
+
+# Describe your suggestion
+*replace me*

.github/ISSUE_TEMPLATE/feature_request.md

@@ -8,5 +8,7 @@ assignees: ''
 ---
 
 ## Feature description:
+*replace me*
 
-## Additional info (optional)
+## Additional info (optional):
+*replace me*