Fix typos

Found via `typos --hidden --format brief`

History.md

@@ -187,7 +187,7 @@ Add missing files
 * 1 minor fix:
   * Don't send label through printf so that % work directly
 
-* 1 documenation changes:
+* 1 documentation changes:
   * Use HEREDOC and wrap at 80 chars for example result description
 
 * 1 usage fix:

lib/benchmark/compare.rb

@@ -64,7 +64,7 @@ def compare(*entries, order: :fastest)
         sorted = entries.sort_by{ |e| e.stats.central_tendency }.reverse
         baseline = sorted.shift
       else
-        raise ArgumentError, "Unknwon order: #{order.inspect}"
+        raise ArgumentError, "Unknown order: #{order.inspect}"
       end
 
       $stdout.puts "\nComparison:"

lib/benchmark/ips/job.rb

@@ -203,7 +203,7 @@ def time_us before, after
         (after.to_f - before.to_f) * MICROSECONDS_PER_SECOND
       end
 
-      # Calculate the interations per second given the number
+      # Calculate the iterations per second given the number
       # of cycles run and the time in microseconds that elapsed.
       # @param [Integer] cycles Cycles.
       # @param [Integer] time_us Time in microsecond.

lib/benchmark/ips/report.rb

@@ -62,7 +62,7 @@ def samples
 
         # Control if the total time the job took is reported.
         # Typically this value is not significant because it's very
-        # close to the expected time, so it's supressed by default.
+        # close to the expected time, so it's suppressed by default.
         def show_total_time!
           @show_total_time = true
         end
@@ -115,7 +115,7 @@ def header
           @label.to_s.rjust(20)
         end
 
-        # Return string repesentation of Entry object.
+        # Return string representation of Entry object.
         # @return [String] Header and body.
         def to_s
           "#{header} #{body}"