Make some Workbox Overview links relative (#5272)
Make some Workbox Overview links relative (#5272)

* Make a couple of links relative.

* wf_updated_on bump.

* Updated the date in the correct doc.

myakura/WebFundamentals,sonyarianto/WebFundamentals,samdutton/WebFundamentals,ebidel/WebFundamentals,sonyarianto/WebFundamentals,lucab85/WebFundamentals,agektmr/WebFundamentals,google/WebFundamentals,google/WebFundamentals,lucab85/WebFundamentals,lucab85/WebFundamentals,agektmr/WebFundamentals,agektmr/WebFundamentals,samdutton/WebFundamentals,lucab85/WebFundamentals,ebidel/WebFundamentals,ebidel/WebFundamentals,ebidel/WebFundamentals,google/WebFundamentals,myakura/WebFundamentals,sonyarianto/WebFundamentals,sonyarianto/WebFundamentals,google/WebFundamentals,samdutton/WebFundamentals,agektmr/WebFundamentals,myakura/WebFundamentals,myakura/WebFundamentals,samdutton/WebFundamentals