Update slack links

_extras/customization.md

@@ -177,7 +177,7 @@ If you wish to create your own custom schedule, an empty template is available i
 `_includes/custom-schedule.html`. In this file, we provide the structure for a
 4-day workshop as it is often used for online workshops. To use this custom
 schedule instead of the one provided by default in the template, delete the
-block of code found under the "Schedule" header in the `index.md` file and 
+block of code found under the "Schedule" header in the `index.md` file and
 replace it with`{% raw %}{% include custom-schedule.html %}{% endraw %}`.
 
 The schedule is formatted using a table. If you would like to learn more about
@@ -195,8 +195,8 @@ if you would like to create a schedule table to replace this text.
 
 If you need assistance with customizing the setup instructions for your website,
 feel free to ask your questions in the Carpentries
-[Instructors Slack channel](https://swcarpentry.slack.com/archives/C08BVNU00)
-([join The Carpentries Slack workspace](https://swc-slack-invite.herokuapp.com/)).
+[Instructors Slack channel](https://carpentries.slack.com/archives/C08BVNU00)
+([join The Carpentries Slack workspace](https://slack-invite.carpentries.org/)).
 
 ### Software Carpentry workshops
 

bin/boilerplate/README.md

@@ -1,8 +1,8 @@
 # FIXME Lesson title
 
-[![Create a Slack Account with us](https://img.shields.io/badge/Create_Slack_Account-The_Carpentries-071159.svg)](https://swc-slack-invite.herokuapp.com/)
+[![Create a Slack Account with us](https://img.shields.io/badge/Create_Slack_Account-The_Carpentries-071159.svg)](https://slack-invite.carpentries.org/)
 
-This repository generates the corresponding lesson website from [The Carpentries](https://carpentries.org/) repertoire of lessons. 
+This repository generates the corresponding lesson website from [The Carpentries](https://carpentries.org/) repertoire of lessons.
 
 ## Contributing
 
@@ -17,12 +17,12 @@ Please see the current list of [issues][FIXME] for ideas for contributing to thi
 repository. For making your contribution, we use the GitHub flow, which is
 nicely explained in the chapter [Contributing to a Project](http://git-scm.com/book/en/v2/GitHub-Contributing-to-a-Project) in Pro Git
 by Scott Chacon.
-Look for the tag ![good_first_issue](https://img.shields.io/badge/-good%20first%20issue-gold.svg). This indicates that the maintainers will welcome a pull request fixing this issue.  
+Look for the tag ![good_first_issue](https://img.shields.io/badge/-good%20first%20issue-gold.svg). This indicates that the maintainers will welcome a pull request fixing this issue.
 
 
 ## Maintainer(s)
 
-Current maintainers of this lesson are 
+Current maintainers of this lesson are
 
 * FIXME
 * FIXME