Fix server.rb support

Gemfile

@@ -15,7 +15,7 @@ gem "sass", "~> 3.7"
 
 ##
 # Web server
-gem "server.rb", path: "./packages/ruby/server"
+gem "server.rb", path: "./packages/ruby/server.rb"
 
 ##
 # Other

Gemfile.lock

@@ -1,5 +1,5 @@
 PATH
-  remote: packages/ruby/server
+  remote: packages/ruby/server.rb
   specs:
     server.rb (0.1.0)
       puma (~> 6.3)
@@ -70,7 +70,7 @@ GEM
     nanoc-tidy.rb (0.4.0)
     nanoc-webpack.rb (0.5.6)
       ryo.rb (~> 0.4)
-    nio4r (2.7.0)
+    nio4r (2.7.1)
     paint (2.3.0)
     parallel (1.24.0)
     parser (3.3.0.5)
@@ -84,7 +84,7 @@ GEM
     puma (6.4.2)
       nio4r (~> 2.0)
     racc (1.7.3)
-    rack (3.0.9)
+    rack (3.0.10)
     rainbow (3.1.1)
     rainpress (1.0.1)
     rb-fsevent (0.11.2)

Rakefile.rb

@@ -21,7 +21,7 @@ task :server, [:protocol] do |_t, args|
       else
         {host: nanoc.server.tcp.host, port: nanoc.server.tcp.port}
       end
-  s = Server.for_dir(nanoc.output_dir, o)
+  s = Server.dir(nanoc.output_dir, o)
   s.start(block: true)
 rescue Interrupt
   s.stop