Add rel=edit attribute to change suggestion link

Author: capjamesg

layouts/partials/edit_post.html

@@ -2,7 +2,7 @@
 {{- $fileUrlPath := path.Join .File.Path }}
 
 {{- if or .Params.author site.Params.author (.Param "ShowReadingTime") (not .Date.IsZero) .IsTranslated }} | {{- end -}}
-<a href="{{ .Params.editPost.URL | default site.Params.editPost.URL }}{{ if .Params.editPost.appendFilePath | default ( site.Params.editPost.appendFilePath | default false ) }}/{{ $fileUrlPath }}{{ end }}" rel="noopener noreferrer" target="_blank">
+<a href="{{ .Params.editPost.URL | default site.Params.editPost.URL }}{{ if .Params.editPost.appendFilePath | default ( site.Params.editPost.appendFilePath | default false ) }}/{{ $fileUrlPath }}{{ end }}" rel="noopener noreferrer edit" target="_blank">
     {{- .Params.editPost.Text | default (site.Params.editPost.Text | default (i18n "edit_post" | default "Edit")) -}}
 </a>
 {{- end }}