Remove references to '/ci' path while describing Runner's registration

app/views/projects/runners/_specific_runners.html.haml

@@ -9,7 +9,7 @@
       (checkout the #{link_to 'GitLab Runner section', 'https://about.gitlab.com/gitlab-ci/#gitlab-runner', target: '_blank'} for information on how to install it).
     %li
       Specify the following URL during the Runner setup:
-      %code= ci_root_url(only_path: false)
+      %code= root_url(only_path: false)
     %li
       Use the following registration token during setup:
       %code= @project.runners_token

doc/ci/docker/using_docker_build.md

@@ -37,7 +37,7 @@ GitLab Runner then executes job scripts as the `gitlab-runner` user.
 
     ```bash
     sudo gitlab-ci-multi-runner register -n \
-      --url https://gitlab.com/ci \
+      --url https://gitlab.com/ \
       --registration-token REGISTRATION_TOKEN \
       --executor shell \
       --description "My Runner"
@@ -94,7 +94,7 @@ In order to do that, follow the steps:
 
     ```bash
     sudo gitlab-ci-multi-runner register -n \
-      --url https://gitlab.com/ci \
+      --url https://gitlab.com/ \
       --registration-token REGISTRATION_TOKEN \
       --executor docker \
       --description "My Docker Runner" \
@@ -112,7 +112,7 @@ In order to do that, follow the steps:
 
     ```
     [[runners]]
-      url = "https://gitlab.com/ci"
+      url = "https://gitlab.com/"
       token = TOKEN
       executor = "docker"
       [runners.docker]
@@ -179,7 +179,7 @@ In order to do that, follow the steps:
 
     ```bash
     sudo gitlab-ci-multi-runner register -n \
-      --url https://gitlab.com/ci \
+      --url https://gitlab.com/ \
       --registration-token REGISTRATION_TOKEN \
       --executor docker \
       --description "My Docker Runner" \
@@ -197,7 +197,7 @@ In order to do that, follow the steps:
 
     ```
     [[runners]]
-      url = "https://gitlab.com/ci"
+      url = "https://gitlab.com/"
       token = REGISTRATION_TOKEN
       executor = "docker"
       [runners.docker]

doc/ci/examples/test-and-deploy-python-application-to-heroku.md

@@ -55,11 +55,11 @@ You can do this through the [Dashboard](https://dashboard.heroku.com/).
 ### Create runner
 First install [Docker Engine](https://docs.docker.com/installation/).
 To build this project you also need to have [GitLab Runner](https://about.gitlab.com/gitlab-ci/#gitlab-runner). 
-You can use public runners available on `gitlab.com/ci`, but you can register your own:
+You can use public runners available on `gitlab.com`, but you can register your own:
 ```
 gitlab-ci-multi-runner register \
   --non-interactive \
-  --url "https://gitlab.com/ci/" \
+  --url "https://gitlab.com/" \
   --registration-token "PROJECT_REGISTRATION_TOKEN" \
   --description "python-3.5" \
   --executor "docker" \

doc/ci/examples/test-and-deploy-ruby-application-to-heroku.md

@@ -50,11 +50,11 @@ You can do this through the [Dashboard](https://dashboard.heroku.com/).
 ### Create runner
 First install [Docker Engine](https://docs.docker.com/installation/).
 To build this project you also need to have [GitLab Runner](https://about.gitlab.com/gitlab-ci/#gitlab-runner).
-You can use public runners available on `gitlab.com/ci`, but you can register your own:
+You can use public runners available on `gitlab.com`, but you can register your own:
 ```
 gitlab-ci-multi-runner register \
   --non-interactive \
-  --url "https://gitlab.com/ci/" \
+  --url "https://gitlab.com/" \
   --registration-token "PROJECT_REGISTRATION_TOKEN" \
   --description "ruby-2.2" \
   --executor "docker" \