feat: correction of navbar links supplement part

[biru-codeastromer]

Fixes #227

This is the supplement part that is needed to make the main part successful

Context of the main PR

I included a new approach to have the required navbar links correction in docs.jenkins.io ..
Not all pages were wrong ,some of them were incorrect ..corrected them here

This is one of the crucial part of our Complete Build Retooling of jenkins.io project

Also some broken links I havent corrected since first I have to make those pages as they will be gatsby ..and then finally include them if needed later

[krisstern]

@biru-codeastromer I am thinking we may want to have a separate page for storing all published versions as a list, that way we could just automate adding new versions one at a time in time. What do you think? Could you try coming up of ways to implement this change?

[krisstern]

Any updates on this @biru-codeastromer? You have not made the changes as you promised

[biru-codeastromer]

@krisstern I have done it Kris now 😎