Updated create-bot-construct-url-indented.md file with
guidelines on how to URL-encode stream name and topic
name. The hyperlink added will solve the issue for those
who use emoji in stream name or topic name.
Tweaked by tabbott to edit the copy and update the non-indented
version as well.
Fixes#16430.
This is part of our efforts to change our integrations/webhooks
docs to follow the same sort of numbered-list format as our /help
docs. In order to indicate that paragraphs separated by newlines
are part of the same numbered-list point, every paragraph must be
indented 4 spaces.
