Some python docs fail to build due to the same syntax error

[neikos]

I had to make the following same modification to each file below to make them build:

- .. include:: shards/linearizable.rst

• .. include::shards/linearizable.rst

I don't know the syntax of *.rst files, but the space after the '::' struck me as being odd, so I removed it and then everything built

doc/api/shards/atomic_add.rst
doc/api/shards/atomic_and.rst
doc/api/shards/atomic_div.rst
doc/api/shards/atomic_mod.rst
doc/api/shards/atomic_mul.rst
doc/api/shards/atomic_or.rst
doc/api/shards/atomic_sub.rst
doc/api/shards/atomic_xor.rst
doc/api/shards/del.rst
doc/api/shards/get.rst
doc/api/shards/list_lpush.rst
doc/api/shards/list_rpush.rst
doc/api/shards/put.rst
doc/api/shards/set_add.rst
doc/api/shards/set_intersect.rst
doc/api/shards/set_remove.rst
doc/api/shards/set_union.rst
doc/api/shards/string_append.rst
doc/api/shards/string_prepend.rst

[neikos]

I'm closing my own issue. The docs are building fine in the latest commits.