cmd/benchseries: remove repeated definite articles

Change-Id: Id2c492556918fb45c35598eae26114e0f93f4a66
Reviewed-on: https://go-review.googlesource.com/c/perf/+/489636
Auto-Submit: Dmitri Shuralyov <dmitshur@golang.org>
Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Run-TryBot: Ian Lance Taylor <iant@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: shuang cui <imcusg@gmail.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
diff --git a/cmd/benchseries/main_test.go b/cmd/benchseries/main_test.go
index 8f0fb06..57b0c39 100644
--- a/cmd/benchseries/main_test.go
+++ b/cmd/benchseries/main_test.go
@@ -33,7 +33,7 @@
 // The two tests here work with two subdirectories of testdata, one containing
 // benchmarks that were started on an even second, the other containing benchmarks
 // started on an odd second.  Each subdirectory contains a file "reference.json"
-// that in theory contains the the reference values for computer summaries (for
+// that in theory contains the reference values for computer summaries (for
 // an artifcially small bootstrap, to save time).
 
 var oddReference = filepath.Join("odd", "reference.json")