Fix sitemap builder

Author: thibaudgg

Gemfile

@@ -1,5 +1,6 @@
 source 'https://rubygems.org'
 
+gem 'builder' # Required for xml.builder
 gem 'ostruct' # Required for Ruby 4.0+
 
 gem 'middleman', '~> 4.6'

Gemfile.lock

@@ -18,6 +18,7 @@ GEM
       public_suffix (>= 2.0.2, < 8.0)
     base64 (0.3.0)
     bigdecimal (4.0.1)
+    builder (3.3.0)
     coffee-script (2.4.1)
       coffee-script-source
       execjs
@@ -54,7 +55,7 @@ GEM
     http_parser.rb (0.8.1)
     i18n (1.14.8)
       concurrent-ruby (~> 1.0)
-    json (2.18.0)
+    json (2.18.1)
     kramdown (2.5.2)
       rexml (>= 3.4.4)
     listen (3.10.0)
@@ -179,6 +180,7 @@ PLATFORMS
   x86_64-linux-musl
 
 DEPENDENCIES
+  builder
   middleman (~> 4.6)
   middleman-inline_svg
   middleman-livereload

source/_index.erb

@@ -100,7 +100,7 @@
   </p>
 </div>
 
-<span class="mt-16 mx-auto block w-52 h-1 rounded-full bg-gradient-to-r from-logo-green to-green-600"></span>
+<span class="mt-16 mx-auto block w-52 h-1 rounded-full bg-linear-to-r from-logo-green to-green-600"></span>
 
 <h2 id="about" class="mt-8 pt-8 mx-auto md:w-5/6 text-center text-xl md:text-3xl font-bold scroll-mt-24">
   <%= t("about.title") %>