seo: cleanup and optimize roadmap(s) metadata (#8828)

* audit first 11 roadmaps

* audit next 10 roadmaps

* audit next 15 roadmaps

* audit last 22 roadmaps

* Update src/data/roadmaps/ai-data-scientist/ai-data-scientist.md

* Update src/data/roadmaps/aspnet-core/aspnet-core.md

* apply suggestions from code review

* fix seo title

* Update src/data/roadmaps/frontend/frontend.md

* Update src/data/roadmaps/backend/backend.md

---------

Co-authored-by: Kamran Ahmed <kamranahmed.se@gmail.com>

src/data/roadmaps/full-stack/full-stack.md

@@ -25,7 +25,7 @@ courses:
     instructor:
       name: 'Kamran Ahmed'
       image: 'https://github.com/kamranahmedse.png'
-      title: 'Founder roadmap.sh'
+      title: 'Founder - roadmap.sh'
 question:
   title: 'What is a Full Stack Developer?'
   description: |
@@ -72,10 +72,10 @@ seo:
   title: 'Full Stack Developer Roadmap'
   description: 'Learn to become a modern full stack developer using this roadmap. Community driven, articles, resources, guides, interview questions, quizzes for modern full stack development.'
   keywords:
-    - 'javascript roadmap 2024'
-    - 'full stack roadmap 2024'
-    - 'full stack developer roadmap 2024'
-    - 'guide to becoming a developer'
+    - 'javascript roadmap 2025'
+    - 'full stack roadmap 2025'
+    - 'full stack developer roadmap 2025'
+    - 'guide to becoming a mern developer'
     - 'guide to becoming a full stack developer'
     - 'full stack developer'
     - 'full stack engineer'