docs: Fix some typos

Fix typos.

The following command in the chapter entitled "How to use Tezos?":

tezos-client originate contract id for alice transferring 1 from alice \
             running ./tests_python/contracts/attic/id.tz \
             --init '"hello"' --burn-cap 0.4

(which is invalid) is replaced by:

tezos-client originate contract id transferring 1 from alice \
             running ./tests_python/contracts/attic/id.tz \
             --init '"hello"' --burn-cap 0.4

I hope this is the correct fix.