[Docs] Hyperlink points to wrong page

[Bharath314]

Current State

A hyperlink for Service Mesh Performance points to layer5.io, which might be the wrong page to point to.

Affected section - https://cloud.layer5.io/academy/learning-paths/deea6061-b6be-49a9-ad1c-f1a5c32e1fa9/foundations-of-cloud-native-management-with-meshery/meshery-essentials/orientation/what-is-meshery/#performance

Desired State

The link should point to smp-spec.io

---

Contributor Guide and Resources

• 📚 Instructions for contributing to layer5-academy
  • academy-template documentation site, example and theme
• 🎨 Wireframes and designs for Layer5 site in Figma (open invite)
• 🙋🏾🙋🏼 Questions: Layer5 Discussion Forum and Layer5 Community Slack