fix: accessibility fixes

src/components/widget/CategoriesLink.astro

@@ -13,7 +13,7 @@ const {categories} = Astro.props;
 ---
 <div>
     {Object.entries(categories).map(([key, value]) =>
-        <ButtonLink url={getCategoryUrl(key)} badge={value.count}>{value.name}</ButtonLink>
+        <ButtonLink url={getCategoryUrl(key)} badge={value.count} label=`View all posts in the ${value.name} category`>{value.name}</ButtonLink>
         <div class="ml-2">
             {Object.keys(value.children).length > 0 && <Astro.self categories={value.children}></Astro.self>}
         </div>