Add missing meta description for SEO

layouts/_default/baseof.html

@@ -6,6 +6,7 @@
     {{/* NOTE: the Site's title, and if there is a page title, that is set too */}}
     <title>{{ block "title" . }}{{ with .Params.Title }}{{ . }} | {{ end }}{{ .Site.Title }}{{ end }}</title>
     <meta name="viewport" content="width=device-width,minimum-scale=1">
+    <meta name="description" content="{{ with .Description }}{{ . }}{{ else }}{{if .IsPage}}{{ .Summary }}{{ else }}{{ with .Site.Params.description }}{{ . }}{{ end }}{{ end }}{{ end }}">
     {{ hugo.Generator }}
     {{/* NOTE: For Production make sure you add `HUGO_ENV="production"` before your build command */}}
     {{ if eq (getenv "HUGO_ENV") "production" | or (eq .Site.Params.env "production")  }}