dc61a1c3bdc1b77a6dfd857bec65db687709bc55 commands: remove discrepancy between blockheight and block_height (Antoine Poinsot)
Pull request description:
This removes one inconsistencies. Quickly skimming through the doc i didn't find any other.
Fixes#64.
ACKs for top commit:
edouardparis:
utACK dc61a1c3bdc1b77a6dfd857bec65db687709bc55
Tree-SHA512: dccff594673ffe34048ab5ad931005c7927e0835501b8377e0b0c8fac9a8d3e5a5f8b3372bd89b3ec33b5f377aecd47164f54ee1a622c9cb375227f4c2009f1b