fix(docs): fix broken markdown links (#9534)

docs/CONTRIBUTING.md

@@ -113,8 +113,9 @@ this:
 > Note: PR deployment will be re-deployed automatically when the PR is updated.
 > It will use the last values automatically for redeployment.
 
-> You need to be a member or collaborator of the of [coder](github.com/coder)
-> GitHub organization to be able to deploy a PR.
+> You need to be a member or collaborator of the of
+> [coder](https://github.com/coder) GitHub organization to be able to deploy a
+> PR.
 
 Once the deployment is finished, a unique link and credentials will be posted in
 the [#pr-deployments](https://codercom.slack.com/archives/C05DNE982E8) Slack

docs/changelogs/v2.1.1.md

@@ -6,7 +6,7 @@
   workspaces (#9230) (@Emyrk)
   ![Last used](https://user-images.githubusercontent.com/22407953/262407146-06cded4e-684e-4cff-86b7-4388270e7d03.png)
   > You can use `last_used_before` and `last_used_after` in the workspaces
-  > search with [RFC3339Nano](RFC3339Nano) datetimes
+  > search with [RFC3339Nano](https://www.rfc-editor.org/rfc/rfc3339) datetime
 - Add `daily_cost`` to `coder ls` to show
   [quota](https://coder.com/docs/v2/latest/admin/quotas) consumption (#9200)
   (@ammario)

docs/ides/gateway.md

@@ -146,7 +146,7 @@ keytool -import -alias coder -file cacert.pem -keystore /Applications/JetBrains\
 
 1. Select the connection you just added
 
-   ![Gateway Welcome](../images/gaGteway/gateway-welcome.png)
+   ![Gateway Welcome](../images/gateway/gateway-welcome.png)
 
 1. Click "Check Connection and Continue"