Image for Git repos organization corrected in how-to-contribute page

[Himanshityagii24]

I have corrected the image of Git repos organization in how-to-contribute page:

FIXES: #99

[github-actions]

👋 @Himanshityagii24

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[yada]

Thanks @Himanshityagii24,

1. Please an issue to describe the problem and link it to your PR
2. But please use the same image name and replace it with your update (/assets/images/git-repos-organization.png)
3. Why are you changing the version in packages? This is not related to the issue you fixed: please remove these changes ;)
4. Please sign your PR (see the DCO check for details), this is mandatory.

[yada]

Thanks for the update @Himanshityagii24
Still have a useless modification on frontend/package.json
And you need to sign and pass the DCO check, see: microcks/microcks.io#304 (comment)

[yada]

Sorry, but too many commits and changes in your PR are not related to the issue!
https://github.com/microcks/hub.microcks.io/pull/97/commits
https://github.com/microcks/hub.microcks.io/pull/97/files

We can not merge old commits twice and create history tracking issues...
Please fix this, and I'll gladly merge the picture update (only).

[Himanshityagii24]

Sorry for the inconvenience.I'll