website: Language: Update sidebar nav with new URLs
website: Language: Update sidebar nav with new URLs

The files aren't moved as of this commit, but this serves as a map for the
subsequent changes.

rnaveiras/terraform,hashicorp/terraform,apparentlymart/terraform,hashicorp/terraform,ewbankkit/terraform,tommynsong/terraform,tommynsong/terraform,ewbankkit/terraform,apparentlymart/terraform,rnaveiras/terraform,apparentlymart/terraform,hashicorp/terraform,ewbankkit/terraform,rnaveiras/terraform,ewbankkit/terraform,tommynsong/terraform,apparentlymart/terraform,apparentlymart/terraform