api docs: Render example responses as with JSON codehilite.
api docs: Render example responses as with JSON codehilite.

This makes the example responses a lot prettier visually.

synicalsyntax/zulip,brainwane/zulip,zulip/zulip,rht/zulip,rht/zulip,brainwane/zulip,showell/zulip,timabbott/zulip,hackerkid/zulip,brainwane/zulip,punchagan/zulip,zulip/zulip,timabbott/zulip,brainwane/zulip,punchagan/zulip,zulip/zulip,eeshangarg/zulip,rht/zulip,andersk/zulip,eeshangarg/zulip,shubhamdhama/zulip,rht/zulip,brainwane/zulip,synicalsyntax/zulip,punchagan/zulip,synicalsyntax/zulip,eeshangarg/zulip,synicalsyntax/zulip,kou/zulip,kou/zulip,timabbott/zulip,showell/zulip,kou/zulip,shubhamdhama/zulip,zulip/zulip,eeshangarg/zulip,shubhamdhama/zulip,hackerkid/zulip,hackerkid/zulip,zulip/zulip,kou/zulip,timabbott/zulip,synicalsyntax/zulip,zulip/zulip,punchagan/zulip,timabbott/zulip,kou/zulip,andersk/zulip,shubhamdhama/zulip,eeshangarg/zulip,kou/zulip,kou/zulip,andersk/zulip,timabbott/zulip,brainwane/zulip,andersk/zulip,synicalsyntax/zulip,andersk/zulip,hackerkid/zulip,shubhamdhama/zulip,andersk/zulip,zulip/zulip,hackerkid/zulip,hackerkid/zulip,punchagan/zulip,eeshangarg/zulip,showell/zulip,andersk/zulip,shubhamdhama/zulip,eeshangarg/zulip,hackerkid/zulip,showell/zulip,brainwane/zulip,rht/zulip,showell/zulip,rht/zulip,showell/zulip,showell/zulip,timabbott/zulip,shubhamdhama/zulip,punchagan/zulip,rht/zulip,synicalsyntax/zulip,punchagan/zulip