Remove faulty components from wiki links from readme.wiki/readme.md

Remove the <user>/<repo> or <team>/<repo> component from relative links in the main readme.wiki and readme.md pages.

Any ordinary wiki links in the readme.wiki get this structure:

https://bitbucket.org/<account>/<repository>/src/<commit-id>/<account>/<repository>/wiki/<target>

This is wrong. The last two components should be taken out. As an example (private repo):

https://bitbucket.org/dp_group/lxc-install/src/1b4bb29643a3a1bfb292c331b4758f29ef8abfbd/dp_group/lxc-install/wiki/bare.wiki

The right link should be:

https://bitbucket.org/<account>/<repository>/src/<commit-id>/wiki/<target>

Or:

https://bitbucket.org/dp_group/lxc-install/src/1b4bb29643a3a1bfb292c331b4758f29ef8abfbd/wiki/bare.wiki