Broken links in dev center guides for v1.0b2

[VictorVelarde]

As notified by @jaimegc, there are some broken links in dev center, in the Guides, for v1.0b2

Check links at
https://carto.com/developers/cartoframes/v1.0b2/guides/Introduction/

(also check some other betas, as it looks like an issue on 'version prefix')

[cmongut]

Thanks @VictorVelarde! Low priority as it was notified internally.

cc @CartoDB/rt-managers

[Jesus89]

We're going to remove 1.0beta docs, so we can close this issue.