Dont use strong tags on branch form labels

Using the strong tag on the form labels is not consitent
with the other forms and mixes up the hierarchy.

src/api/app/views/webui/shared/_package_branch_form.html.haml

@@ -1,14 +1,11 @@
 - if show_project_field
-  .pt-2
-    %p
-      %strong Change Branch Destination
-    .form-group
-      %label{ for: 'target_project' }
-        %strong Branch project name
-      = text_field_tag 'target_project', target_project, size: 80, maxlength: 200, class: 'form-control'
+  %p
+    %strong Change the branch destination
+  .form-group
+    %label{ for: 'target_project' } Branch project name:
+    = text_field_tag 'target_project', target_project, size: 80, maxlength: 200, class: 'form-control'
 .form-group
-  %label{ for: 'target_package' }
-    %strong Branch package name
+  %label{ for: 'target_package' } Branch package name:
   = text_field_tag 'target_package', package.try(:name), size: 80, maxlength: 200, class: 'form-control'
 .custom-control.custom-checkbox
   = check_box_tag(:current_revision, false, false, class: 'custom-control-input')