wrong cd command in makefile

[AkashS20]

Current Behavior

The cd.. command in makefile, here is wrong.

Expected Behavior

It should be cd ..

Environment

• Host OS: Mac Linux Windows
• Platform: Docker or Kubernetes
• Meshery Server Version: stable-v
• Meshery Client Version: stable-v

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Contributor Guides and Resources

• 🛠 Meshery Build & Release Strategy
• 📚 Instructions for contributing to documentation
  • Meshery documentation site and source
• 🎨 Wireframes and designs for Meshery UI in Figma
• 🙋🏾🙋🏼 Questions: Layer5 Discussion Forum and Layer5 Community Slack

[AkashS20]

I'd like to work on this

[thisiskaransgit]

Though it is not a "wrong" command, since there's no behavioral change in the outcome, it's better to follow the code conventions, you can go ahead and provide a quick fix.

Additionally,

1. Update the "Layer Community Welcome Guide" link to Newcomers' Guide in Readme.md
2. Update the play website preview image, (the toggle button was in the center earlier, the website is updated now) in Readme.md

incorporate these changes in a single PR and mention the changes made