Rename bisq-network/docs => bisq-network/bisq-docs

Rationale: this, like other bisq-* code repositories is a repository
that we want and expect many people to fork and submit PRs from. Thus,
it's good to have it qualified as bisq-docs, such that people don't end
up cloning an unqualified 'docs' repository that ends up in forked
repositories being named alice/docs, bob/docs, etc.

See bisq-network/bisq-docs#36

.mrconfig

@@ -17,7 +17,7 @@ checkout = git clone git@github.com:bisq-network/dao.git dao
 checkout = git clone git@github.com:bisq-network/bisq-desktop desktop
 
 [docs]
-checkout = git clone git@github.com:bisq-network/docs.git docs
+checkout = git clone git@github.com:bisq-network/bisq-docs.git docs
 
 [explorer]
 checkout = git clone git@github.com:bisq-network/bisq-explorer.git explorer