Update zulipchat.com links to zulip.com.

Signed-off-by: Anders Kaseorg <anders@zulip.com>

zulip/README.md

@@ -1,6 +1,6 @@
 #### Dependencies
 
-The [Zulip API](https://zulipchat.com/api) Python bindings require the
+The [Zulip API](https://zulip.com/api) Python bindings require the
 following dependencies:
 
 * **Python (version >= 3.5)**

zulip/integrations/hg/zulip_changegroup.py

@@ -3,7 +3,7 @@
 # Zulip hook for Mercurial changeset pushes.
 #
 # This hook is called when changesets are pushed to the master repository (ie
-# `hg push`). See https://zulipchat.com/integrations for installation instructions.
+# `hg push`). See https://zulip.com/integrations for installation instructions.
 
 import zulip
 import sys

zulip/integrations/rss/rss-bot

@@ -31,7 +31,7 @@ To use this script:
 1. Create an RSS feed file containing 1 feed URL per line (default feed
    file location: ~/.cache/zulip-rss/rss-feeds)
 2. Subscribe to the stream that will receive RSS updates (default stream: rss)
-3. create a ~/.zuliprc as described on https://zulipchat.com/api/configuring-python-bindings
+3. create a ~/.zuliprc as described on https://zulip.com/api/configuring-python-bindings
 4. Test the script by running it manually, like this:
 
 /usr/local/share/zulip/integrations/rss/rss-bot

zulip/integrations/trello/README.md

@@ -20,4 +20,4 @@ Usage :
                              --zulip-webhook-url <zulip_webhook_url>
 
 For more information, please see Zulip's documentation on how to set up
-a Trello integration [here](https://zulipchat.com/integrations/doc/trello).
+a Trello integration [here](https://zulip.com/integrations/doc/trello).

zulip/integrations/trello/zulip_trello.py

@@ -116,7 +116,7 @@ quickly set up a Trello webhook.
 
 Note: The Trello webhook instructions available on your Zulip server
 may be outdated. Please make sure you follow the updated instructions
-at <https://zulipchat.com/integrations/doc/trello>.
+at <https://zulip.com/integrations/doc/trello>.
 """
 
     parser = argparse.ArgumentParser(description=description)

zulip/integrations/zephyr/zephyr_mirror.py

@@ -58,7 +58,7 @@ while backoff.keep_going():
 error_message = """
 ERROR: The Zephyr mirroring bot is unable to continue mirroring Zephyrs.
 This is often caused by failing to maintain unexpired Kerberos tickets
-or AFS tokens.  See https://zulipchat.com/zephyr for documentation on how to
+or AFS tokens.  See https://zulip.com/zephyr for documentation on how to
 maintain unexpired Kerberos tickets and AFS tokens.
 """
 print(error_message)

zulip/setup.py

@@ -49,7 +49,7 @@ package_info = dict(
     url='https://www.zulip.org/',
     project_urls={
         "Source": "https://github.com/zulip/python-zulip-api/",
-        "Documentation": "https://zulipchat.com/api",
+        "Documentation": "https://zulip.com/api",
     },
     data_files=list(recur_expand('share/zulip', 'integrations')),
     include_package_data=True,