feat: add support for Hugo v0.101.0 breaking changes

Hugo v0.101.0 had breaking changes to relURL and relLangURL

See https://github.com/gohugoio/hugo/issues/9994
See https://discourse.gohugo.io/t/changing-the-title-link/41239/5

modules/wowchemy-seo/layouts/index.webmanifest

@@ -16,5 +16,5 @@
     "type": "image/png"
      }],
   "display": "standalone",
-  "start_url": "{{ "/" | relLangURL }}?utm_source=web_app_manifest"
+  "start_url": "{{ site.Home.RelPermalink }}?utm_source=web_app_manifest"
 }

modules/wowchemy/layouts/partials/navbar.html

@@ -19,7 +19,7 @@
 
       {{if $show_logo}}
       <div class="d-none d-lg-inline-flex">
-        <a class="navbar-brand" href="{{ "/" | relLangURL }}">
+        <a class="navbar-brand" href="{{ site.Home.RelPermalink }}">
           {{- if $has_logo -}}
             <img src="{{ $logo.RelPermalink }}" alt="{{ site.Title }}"
             {{with site.Params.header.image.width}}width="{{.}}"{{end}}
@@ -40,7 +40,7 @@
 
       {{if $show_logo}}
       <div class="navbar-brand-mobile-wrapper d-inline-flex d-lg-none">
-        <a class="navbar-brand" href="{{ "/" | relLangURL }}">
+        <a class="navbar-brand" href="{{ site.Home.RelPermalink }}">
         {{- if $has_logo -}}
           <img src="{{ $logo.RelPermalink }}" alt="{{ site.Title }}"
           {{with site.Params.header.image.width}}width="{{.}}"{{end}}