replace github references to gitlab

docs/CONTRIBUTING.md

@@ -42,7 +42,7 @@ We will also use the documentation hacks to plan as a community, learn about wha
 
 ## Or, 4. Jump straight in!
 
-If you are confident using git, markdown, and github pages, you are very welcome to [submit an issue to our GitLab repository](https://git.fmrib.ox.ac.uk/open-science/community/Open-WIN-Community/-/issues), and submit a merge request.
+If you are confident using git, markdown, and GitLab pages, you are very welcome to [submit an issue to our GitLab repository](https://git.fmrib.ox.ac.uk/open-science/community/Open-WIN-Community/-/issues), and submit a merge request.
 
 ### New to GitLab?
 If you'd like to try out GitLab at your own pace, take a look at the [training materials available here](../gitlab).

docs/using-this-repo.md

@@ -38,12 +38,12 @@ Don't worry, no one really knows how to use git.<sup>1</sup> [https://xkcd.com/1
 
 This site is for you, so we need to make sure we've got things right!
 
-Providing feedback about this site is a contribution to  the community. Thank you in advance for your contribution! 😃 Any contribution you make will be recorded via GitHub, and we'll make sure you are recognised for it.
+Providing feedback about this site is a contribution to  the community. Thank you in advance for your contribution! 😃 Any contribution you make will be recorded via GitLab, and we'll make sure you are recognised for it.
 
 ## What is an "issue"
-An "issue" is a term used by GitHub for a place to track ideas, enhancements, tasks, or bugs.
+An "issue" is a term used by GitLab for a place to track ideas, enhancements, tasks, or bugs.
 
-You can leave feedback on this site by commenting on the [issues in our GitHub repository](https://git.fmrib.ox.ac.uk/open-science/community/Open-WIN-Community/-/issues).  You are welcome to comment on any issue that feels relevant. If you are new to the community you might like to first have a go with the issues labelled "good first issue".
+Folks with a WIN IT account can leave feedback on this site by commenting on the [issues in our GitLab repository](https://git.fmrib.ox.ac.uk/open-science/community/Open-WIN-Community/-/issues).  You are welcome to comment on any issue that feels relevant. If you are new to the community you might like to first have a go with the issues labelled "good first issue".
 
 ## Creating a GitLab account to comment
 To comment on the issues you will need a WIN GitLab login. If you haven’t got a WIN GitLab account, take a look at [this guide](../gitlab/2-1-starting-gitlab-account) for how to create one.
@@ -60,5 +60,5 @@ Yes. We'd really like for all feedback to be public. This will ensure that every
 
 Please don’t be worried about being critical (if something’s not right, I need to know about it!), but please try to be respectful and courteous, as per the [community participation guidelines](../community/CODE_OF_CONDUCT).
 
-## Do I *really* have to use GitHub?
+## Do I *really* have to use GitLab?
 If this process really doesn't work for you, I'd still love to receive your feedback one way or another. By email is just fine 😊.