ci(rubocop): Fix Rake/Desc

Author: weppos

.rubocop_todo.yml

@@ -9,9 +9,3 @@
 # Offense count: 19
 Minitest/MultipleAssertions:
   Max: 12
-
-# Offense count: 1
-# This cop supports safe autocorrection (--autocorrect).
-Rake/Desc:
-  Exclude:
-    - 'Rakefile'

Rakefile

@@ -30,6 +30,7 @@ end
 CLOBBER.include "yardoc"
 
 
+desc "Run all benchmarks in the benchmarks directory"
 task :benchmarks do
   Dir["benchmarks/bm_*.rb"].each do |file|
     sh "ruby #{file}"