fix some links

CONTRIBUTING.md

@@ -34,7 +34,7 @@ source edition, and GitLab Enterprise Edition (EE) which is our commercial
 edition. Throughout this guide you will see references to CE and EE for
 abbreviation.
 
-If you have read this guide and want to know how the GitLab [core-team][]
+If you have read this guide and want to know how the GitLab [core team][core-team]
 operates please see [the GitLab contributing process](PROCESS.md).
 
 ## Contributor license agreement
@@ -68,10 +68,10 @@ for audiences of all ages.
 ## Helping others
 
 Please help other GitLab users when you can. The channels people will reach out
-on can be found on the [getting help page][].
+on can be found on the [getting help page][getting-help].
 
 Sign up for the mailing list, answer GitLab questions on StackOverflow or
-respond in the IRC channel. You can also sign up on [CodeTriage][] to help with
+respond in the IRC channel. You can also sign up on [CodeTriage][codetriage] to help with
 the remaining issues on the GitHub issue tracker.
 
 ## I want to contribute!
@@ -115,7 +115,7 @@ For feature proposals for EE, open an issue on the
 
 In order to help track the feature proposals, we have created a
 [`feature proposal`][fpl] label. For the time being, users that are not members
-of the project cannot add labels. You can instead ask one of the [core team][]
+of the project cannot add labels. You can instead ask one of the [core team][core-team]
 members to add the label `feature proposal` to the issue.
 
 Please keep feature proposals as small and simple as possible, complex ones
@@ -299,8 +299,8 @@ to us than having a minimal commit log. The smaller an MR is the more likely it
 is it will be merged (quickly). After that you can send more MRs to enhance it.
 
 For examples of feedback on merge requests please look at already
-[closed merge requests][]. If you would like quick feedback on your merge
-request feel free to mention one of the Merge Marshalls of the [core team][].
+[closed merge requests][closed-merge-requests]. If you would like quick feedback on your merge
+request feel free to mention one of the Merge Marshalls of the [core team][core-team].
 Please ensure that your merge request meets the contribution acceptance criteria.
 
 When having your code reviewed and when reviewing merge requests please take the
@@ -369,7 +369,7 @@ Like all merge requests the target should be master so all bugfixes are in maste
 ## Definition of done
 
 If you contribute to GitLab please know that changes involve more than just
-code. We have the following [definition of done][]. Please ensure you support
+code. We have the following [definition of done][definition-of-done]. Please ensure you support
 the feature you contribute through all of these steps.
 
 1. Description explaining the relevancy (see following item)
@@ -448,12 +448,12 @@ when an individual is representing the project or its community.
 Instances of abusive, harassing, or otherwise unacceptable behavior can be
 reported by emailing `contact@gitlab.com`.
 
-This Code of Conduct is adapted from the [Contributor Covenant][], version 1.1.0,
+This Code of Conduct is adapted from the [Contributor Covenant][contributor-covenant], version 1.1.0,
 available at [http://contributor-covenant.org/version/1/1/0/](http://contributor-covenant.org/version/1/1/0/).
 
 [core-team]: https://about.gitlab.com/core-team/
-[getting help page]: https://about.gitlab.com/getting-help/
-[Codetriage]: http://www.codetriage.com/gitlabhq/gitlabhq
+[getting-help]: https://about.gitlab.com/getting-help/
+[codetriage]: http://www.codetriage.com/gitlabhq/gitlabhq
 [up-for-grabs]: https://gitlab.com/gitlab-org/gitlab-ce/issues?label_name=up-for-grabs
 [medium-up-for-grabs]: https://medium.com/@kentcdodds/first-timers-only-78281ea47455
 [ce-tracker]: https://gitlab.com/gitlab-org/gitlab-ce/issues
@@ -467,9 +467,9 @@ available at [http://contributor-covenant.org/version/1/1/0/](http://contributor
 [github-mr-tracker]: https://github.com/gitlabhq/gitlabhq/pulls
 [gdk]: https://gitlab.com/gitlab-org/gitlab-development-kit
 [git-squash]: https://git-scm.com/book/en/Git-Tools-Rewriting-History#Squashing-Commits
-[closed merge requests]: https://gitlab.com/gitlab-org/gitlab-ce/merge_requests?assignee_id=&label_name=&milestone_id=&scope=&sort=&state=closed
-[definition of done]: http://guide.agilealliance.org/guide/definition-of-done.html
-[Contributor Covenant]: http://contributor-covenant.org
+[closed-merge-requests]: https://gitlab.com/gitlab-org/gitlab-ce/merge_requests?assignee_id=&label_name=&milestone_id=&scope=&sort=&state=closed
+[definition-of-done]: http://guide.agilealliance.org/guide/definition-of-done.html
+[contributor-covenant]: http://contributor-covenant.org
 [rss-source]: https://github.com/bbatsov/ruby-style-guide/blob/master/README.md#source-code-layout
 [rss-naming]: https://github.com/bbatsov/ruby-style-guide/blob/master/README.md#naming
 [doc-styleguide]: doc/development/doc_styleguide.md "Documentation styleguide"