Fix minor markdown and text issues for Discovery (#677)
Fix minor markdown and text issues for Discovery (#677)

* Fix minor markdown and text issues for Discovery

Signed-off-by: Scott Nichols <7cffec84f3535751e7e39fdb515d54ec7792b8a5@vmware.com>

* fix rando url

Signed-off-by: Scott Nichols <7cffec84f3535751e7e39fdb515d54ec7792b8a5@vmware.com>

* revert the beta.4 change

Signed-off-by: Scott Nichols <7cffec84f3535751e7e39fdb515d54ec7792b8a5@vmware.com>
cloudevents/spec