Add documentation request issue template

Author: anshumanjadiya1102

.github/ISSUE_TEMPLATE/documentation_request.md

@@ -0,0 +1,18 @@
+---
+name: 📖 Documentation improvement
+about: Request updates or improvements to documentation
+title: "[DOCS] "
+labels: ["documentation"]
+---
+
+### 📝 Documentation section
+Which part of docs or README needs improvement?
+
+### 📚 Current state
+Describe what’s unclear or outdated.
+
+### 💡 Expected improvement
+What should be added, fixed, or clarified?
+
+### 🧩 Additional context
+Links or examples of unclear docs if possible.