Improve accessibility score

layouts/partials/docs/html-head.html

@@ -1,5 +1,6 @@
 <meta charset="UTF-8">
 <meta name="viewport" content="width=device-width, initial-scale=1.0">
+<meta name="description" content="{{ partial "docs/title" . }}">
 {{- template "_internal/opengraph.html" . -}}
 
 <title>{{ partial "docs/title" . }} | {{ .Site.Title -}}</title>

layouts/partials/docs/languages.html

@@ -11,7 +11,7 @@
 
   <ul>
     <li class="flex">
-      <img src="{{ "svg/translate.svg" | relURL }}" />
+      <img src="{{ "svg/translate.svg" | relURL }}" alt="Languages" />
       {{ $.Site.Language.LanguageName }}
     </li> 
   </ul>
@@ -20,7 +20,7 @@
     {{ range sort $langs }}
     <li class="{{ if (eq $.Site.Language .Language ) }}active{{ end }}">
       <a href="{{ .Permalink }}" class="flex">
-        <img src="{{ "svg/translate.svg" | relURL }}" />
+        <img src="{{ "svg/translate.svg" | relURL }}" alt="Languages" />
         {{ .Language.LanguageName }}
       </a>
     </li>

layouts/partials/docs/search.html

@@ -1,6 +1,6 @@
 {{ if default true .Site.Params.BookSearch }}
 <div class="book-search">
-  <input type="text" placeholder="{{ i18n "Search" }}" id="book-search-input" maxlength="64" />
+  <input type="text" id="book-search-input" placeholder="{{ i18n "Search" }}" aria-label="{{ i18n "Search" }}" maxlength="64" />
   <div class="book-search-spinner spinner hidden"></div>
   <ul id="book-search-results"></ul>
 </div>