[Bug Fix] Remove redundant keyword_init: true in docs Structs

Standard's Style/RedundantStructKeywordInit flags `keyword_init: true`
as redundant on Ruby 3.2+ (where Struct accepts both positional and
keyword args), failing the gem linter on main. Drop it from the three
*_docs.rb sample Structs; keyword instantiation still works on the
supported Ruby (>= 3.2).

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

Author: jacksonpires

gem/lib/ruby_ui/data_table/data_table_docs.rb

@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 
 class Views::Docs::DataTable < Views::Base
-  Row = Struct.new(:id, :name, :email, :salary, :status, keyword_init: true)
+  Row = Struct.new(:id, :name, :email, :salary, :status)
 
   SAMPLE_ROWS = [
     Row.new(id: 1, name: "Alice", email: "alice@example.com", salary: 90_000, status: "Active"),

gem/lib/ruby_ui/table/table_docs.rb

@@ -1,8 +1,8 @@
 # frozen_string_literal: true
 
 class Views::Docs::Table < Views::Base
-  Invoice = Struct.new(:identifier, :status, :method, :amount, keyword_init: true)
-  User = Struct.new(:avatar_url, :name, :username, :commits, :github_url, keyword_init: true)
+  Invoice = Struct.new(:identifier, :status, :method, :amount)
+  User = Struct.new(:avatar_url, :name, :username, :commits, :github_url)
 
   def view_template
     component = "Table"

gem/lib/ruby_ui/tabs/tabs_docs.rb

@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 
 class Views::Docs::Tabs < Views::Base
-  Repo = Struct.new(:github_url, :name, :stars, :version, keyword_init: true)
+  Repo = Struct.new(:github_url, :name, :stars, :version)
 
   def view_template
     component = "Tabs"