Implement the sub category dynamic page

[pawan-live]

Task Summary

• Implement the individual sub category page which contains links to articles under that subcategory
• This contains clickable cards/links to articles that are under the each sub category
• This should be nested under the categories dynamic route
• Ex: /[main-category]/[sub-category]/[article]
• ex: rheumaconnect.com/[example-category]/[example-subcategory]/[example-article]

---

Acceptance Criteria

• Sample criteria here

---

Design files:

---

Additional Information

[Add screenshots, notes and additional details here]