Fixing base URL for R2

[CsatariGergely]

Fixing the 404 issue of the breadcrumb navigation in R2.

/assign @efiacor @liamfallon

This supposed to fix the issue for the R2 branch pointed out by @efiacor in #128 (review)

As an extra I'm adding the link fixes to R2 merged to main in #130 (69c79e2)

Link checks for the LFN Wiki are disabled as the wiki is down. LF IT ticket was created.

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[liamfallon]

I downloaded this PR to test it but when I ran hugo serve, the result was:

>  hugo serve

Hugo provides its own webserver which builds and serves the site.
While hugo server is high performance, it is a webserver with limited options.

...skipped lines....

Use "hugo server [command] --help" for more information about a command.

Error: command error: Unable to locate config file or config directory. Perhaps you need to create a new site.
Run `hugo help new` for details.

[efiacor]

I guess these will tie in to the drop down menu when it gets merged right?

[CsatariGergely]

The drop downs are added in #128 and in #133

[liamfallon]

I downloaded this PR to test it but when I ran hugo serve, the result was:

>  hugo serve

Hugo provides its own webserver which builds and serves the site.
While hugo server is high performance, it is a webserver with limited options.

...skipped lines....

Use "hugo server [command] --help" for more information about a command.

Error: command error: Unable to locate config file or config directory. Perhaps you need to create a new site.
Run `hugo help new` for details.

Never mind, my mistake, I pulled the wrong PR.

[liamfallon]

/lgtm
/approve

[nephio-prow]

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