api docs: Fix confusing discussion of "dev server".
api docs: Fix confusing discussion of "dev server".

The Zulip API is to be used on both development and production
servers, and really we just need to talk about zuliprc files.

There's a similar issue for the JS docs, but we need to fix the
copy/paste issues with those as well.

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