Fix typos for "BeckhmarkInterface"

Author: eregon

bench/benchmark-interface/lib/benchmark-interface/backends/bips.rb

@@ -13,7 +13,7 @@ module Bips
       LONG_ITERATION_THRESHOLD = 0.1 # seconds
 
       def self.run(benchmark_set, names, options)
-        BeckhmarkInterface.require_rubygems
+        BenchmarkInterface.require_rubygems
         benchmark_interface_original_require 'benchmark/ips'
 
         unless options['--no-scale']

bench/benchmark-interface/lib/benchmark-interface/backends/deep.rb

@@ -14,8 +14,8 @@ def self.run(benchmark_set, names, options)
         unless names.size == 1
           abort 'The deep backend only works when you run just one benchmark at a time - specify the name on the command line'
         end
-        
-        BeckhmarkInterface.require_rubygems
+
+        BenchmarkInterface.require_rubygems
         benchmark_interface_original_require 'deep-bench/backend'
 
         benchmark = benchmark_set.benchmark(names.first)

bench/benchmark-interface/lib/benchmark-interface/require.rb

@@ -6,7 +6,7 @@
 # GNU General Public License version 2, or
 # GNU Lesser General Public License version 2.1.
 
-module BeckhmarkInterface
+module BenchmarkInterface
 
   def self.require_rubygems
     begin