Update wordings according to:

https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/4093#note_12594802

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

@@ -13,11 +13,11 @@
         = f.check_box :run_untagged
         %span.light Indicates whether this runner can pick jobs without tags
   .form-group
-    = label :locked, 'Lock to this project', class: 'control-label'
+    = label :locked, 'Lock to current projects', class: 'control-label'
     .col-sm-10
       .checkbox
         = f.check_box :locked
-        %span.light When a runner is locked, it cannot be enabled for other projects
+        %span.light When a runner is locked, it cannot be assigned to other projects
   .form-group
     = label_tag :token, class: 'control-label' do
       Token

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

@@ -5,7 +5,7 @@
       - if @project_runners.include?(runner)
         = link_to runner.short_sha, runner_path(runner)
         - if runner.locked?
-          = icon('lock', class: 'has-tooltip', title: 'Exclusive to this project')
+          = icon('lock', class: 'has-tooltip', title: 'Locked to current projects')
         %small
           = link_to edit_namespace_project_runner_path(@project.namespace, @project, runner) do
             %i.fa.fa-edit.btn

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

@@ -23,7 +23,7 @@
       %td Can run untagged jobs
       %td= @runner.run_untagged? ? 'Yes' : 'No'
     %tr
-      %td Exclusive to this project
+      %td Locked to this project
       %td= @runner.locked? ? 'Yes' : 'No'
     %tr
       %td Tags