api-docs: Fix space in zulip-send instructions.
api-docs: Fix space in zulip-send instructions.

andersk/zulip,shubhamdhama/zulip,rht/zulip,zulip/zulip,timabbott/zulip,punchagan/zulip,hackerkid/zulip,shubhamdhama/zulip,synicalsyntax/zulip,brainwane/zulip,dhcrzf/zulip,shubhamdhama/zulip,rht/zulip,kou/zulip,dhcrzf/zulip,andersk/zulip,mahim97/zulip,brainwane/zulip,hackerkid/zulip,rishig/zulip,jackrzhang/zulip,showell/zulip,eeshangarg/zulip,tommyip/zulip,andersk/zulip,kou/zulip,tommyip/zulip,rishig/zulip,synicalsyntax/zulip,dhcrzf/zulip,eeshangarg/zulip,rht/zulip,tommyip/zulip,kou/zulip,mahim97/zulip,hackerkid/zulip,jackrzhang/zulip,zulip/zulip,dhcrzf/zulip,kou/zulip,synicalsyntax/zulip,eeshangarg/zulip,zulip/zulip,zulip/zulip,timabbott/zulip,rht/zulip,mahim97/zulip,hackerkid/zulip,punchagan/zulip,tommyip/zulip,hackerkid/zulip,timabbott/zulip,brainwane/zulip,timabbott/zulip,showell/zulip,hackerkid/zulip,punchagan/zulip,jackrzhang/zulip,kou/zulip,eeshangarg/zulip,rht/zulip,timabbott/zulip,tommyip/zulip,brainwane/zulip,mahim97/zulip,punchagan/zulip,showell/zulip,rishig/zulip,punchagan/zulip,zulip/zulip,dhcrzf/zulip,andersk/zulip,zulip/zulip,brainwane/zulip,jackrzhang/zulip,kou/zulip,dhcrzf/zulip,rishig/zulip,shubhamdhama/zulip,rht/zulip,showell/zulip,andersk/zulip,eeshangarg/zulip,jackrzhang/zulip,rht/zulip,shubhamdhama/zulip,punchagan/zulip,andersk/zulip,punchagan/zulip,dhcrzf/zulip,rishig/zulip,brainwane/zulip,mahim97/zulip,showell/zulip,showell/zulip,shubhamdhama/zulip,synicalsyntax/zulip,tommyip/zulip,jackrzhang/zulip,eeshangarg/zulip,eeshangarg/zulip,jackrzhang/zulip,synicalsyntax/zulip,synicalsyntax/zulip,andersk/zulip,rishig/zulip,synicalsyntax/zulip,showell/zulip,zulip/zulip,tommyip/zulip,hackerkid/zulip,brainwane/zulip,shubhamdhama/zulip,kou/zulip,timabbott/zulip,mahim97/zulip,rishig/zulip,timabbott/zulip