fix blob controller spec failure

app/controllers/projects/blob_controller.rb

@@ -119,7 +119,7 @@ class Projects::BlobController < Projects::ApplicationController
     from_merge_request = MergeRequestsFinder.new(current_user, project_id: @project.id).execute.find_by(iid: params[:from_merge_request_iid])
     if from_merge_request && @target_branch == @ref
       diffs_namespace_project_merge_request_path(from_merge_request.target_project.namespace, from_merge_request.target_project, from_merge_request) +
-        "##{hexdigest(@path)}"
+        "#file-path-#{hexdigest(@path)}"
     else
       namespace_project_blob_path(@project.namespace, @project, File.join(@target_branch, @path))
     end