Polish multilang mode, update docs

layouts/partials/docs/footer.html

@@ -1,5 +1,5 @@
 {{ if or .GitInfo .Site.Params.BookEditPath }}
-<div class="book-footer {{ if not .GitInfo }}justify-end{{ else }}justify-between{{ end }}">
+<div class="book-footer justify-between">
   {{ partial "docs/languages" . }}
   {{ with .GitInfo }}
   <div>
@@ -14,7 +14,7 @@
   <div>
     {{ if $.File }}
     <a class="flex align-center" href="{{ $.Site.Params.BookRepo }}/{{ . }}/{{ $.File.Path }}" target="_blank" rel="noopener">
-      <img src="{{ "svg/edit.svg" | relURL }}" alt="Edit" />
+      <img src="{{ "svg/edit.svg" | relURL }}" alt="{{ i18n "Edit this page" }}" />
       <span>{{ i18n "Edit this page" }}</span>
     </a>
     {{ end }}

layouts/partials/docs/html-head.html

@@ -10,7 +10,8 @@
 <link rel="stylesheet" href="{{ $styles.RelPermalink }}" integrity="{{ $styles.Data.Integrity }}">
 
 {{ if default true .Site.Params.BookSearch }}
-{{- $searchJSFile := printf "%s.%s" .Language.Lang "search.js" -}}
+{{- .Scratch.Set "bookSearchConfig" (i18n "bookSearchConfig") -}}} <!-- Remove after https://github.com/gohugoio/hugo/issues/6331 -->
+{{- $searchJSFile := printf "%s.search.js" .Language.Lang -}}
 {{- $searchJS := resources.Get "search.js" | resources.ExecuteAsTemplate $searchJSFile . | resources.Minify | resources.Fingerprint }}
 <script defer src="{{ $searchJS.RelPermalink }}" integrity="{{ $searchJS.Data.Integrity }}"></script>
 {{ end }}