.github: update issue templates

.github/ISSUE_TEMPLATE/bug_report.md

@@ -1,6 +1,6 @@
 ---
 name: Bug report
-about: Create a report to help us improve
+about: Create a report to help us improve RenderCV
 title: ''
 labels: bug
 assignees: sinaatalay

.github/ISSUE_TEMPLATE/enhancement.md

@@ -1,6 +1,6 @@
 ---
 name: Enhancement
-about: Suggest an idea for this project
+about: Suggest an idea for RenderCV
 title: ''
 labels: enhancement
 assignees: sinaatalay

.github/ISSUE_TEMPLATE/improvement_to_documentation.md

@@ -0,0 +1,9 @@
+---
+name: Bug report
+about: Create a report to help us improve the documentation of RenderCV
+title: ''
+labels: documentation
+assignees: sinaatalay
+---
+
+A clear and concise description of what you want to add, improve, or fix in the documentation.