webhooks/greenhouse: Migrate docs to Markdown.

zerver/webhooks/greenhouse/doc.html

@@ -1,32 +0,0 @@
-<p>
-  First, create a stream where you would like to receive Greenhouse
-  notifications and subscribe all interested parties to the
-  stream. The integration will automatically use the default
-  stream <code>greenhouse</code> if no stream is supplied, though you
-  will still need to create the stream manually even though it's the
-  default.
-</p>
-
-<p>
-  Next, go to the Zulip settings page and create a bot named
-  Greenhouse. Go to the account settings page of your Greenhouse
-  account and under Webhooks, add the below URL and name the
-  integration, Zulip.
-</p>
-
-<p><code>{{ external_api_uri_subdomain }}/v1/external/greenhouse?api_key=abcdefgh&amp;stream=greenhouse</code></p>
-
-<p>
-  Note: <code>api_key</code> must be reconfigured to be the API key of your Zulip bot.<br />
-  If you want to change the stream that receives notifications, change <code>stream=</code> in the URL. <br />
-  To change the topic displayed by the bot, simply append <code>&amp;topic=name</code> to the end of the above URL.
-  Where <code>name</code> is your topic.
-</p>
-
-<p>
-  <b>Congratulations! You're all set</b><br />
-  Your messages should look like this:
-</p>
-
-<p><img class="screenshot" src="/static/images/integrations/greenhouse/000.png" /></p>
-

zerver/webhooks/greenhouse/doc.md

@@ -0,0 +1,19 @@
+{!create-stream.md!}
+
+The integration will automatically use the default stream
+`greenhouse` if no stream is supplied, though you will still
+need to create the stream manually even though it's the
+default.
+
+{!create-bot-construct-url.md!}
+
+Go to the account settings page of your Greenhouse account and
+under **Webhooks**, add the above URL and name the integration,
+Zulip.
+
+To change the topic displayed by the bot, simply append `&topic=name`
+to the end of the above URL, where `name` is your topic.
+
+{!congrats.md!}
+
+![](/static/images/integrations/greenhouse/000.png)