all: fix some comments

Change-Id: I4904c0ae3ddda8d3b45ff0509f206f9976a401e2
Reviewed-on: https://go-review.googlesource.com/c/perf/+/464235
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Ian Lance Taylor <iant@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Reviewed-by: Tatiana Bradley <tatianabradley@google.com>

analysis/app/trend.go

diff --git a/analysis/app/trend.go b/analysis/app/trend.go
index 213e282..ad381da 100644
--- a/analysis/app/trend.go
+++ b/analysis/app/trend.go
@@ -74,7 +74,7 @@
 	PlotType     template.JS
 }
 
-// trendData computes the values for the template and returns a trendData for display.
+// trendQuery computes the values for the template and returns a trendData for display.
 func (a *App) trendQuery(ctx context.Context, q string, opt plotOptions) *trendData {
 	d := &trendData{Q: q}
 	if q == "" {

benchseries/benchseries.go

diff --git a/benchseries/benchseries.go b/benchseries/benchseries.go
index cdf1e30..297fb47 100644
--- a/benchseries/benchseries.go
+++ b/benchseries/benchseries.go
@@ -901,7 +901,7 @@
 	return ChangeScore(a.Low, a.Center, a.High, b.Low, b.Center, b.High)
 }
 
-// AddSumaries computes the summary data (bootstrapped estimated of the specified
+// AddSummaries computes the summary data (bootstrapped estimated of the specified
 // confidence interval) for the comparison series cs.  The 3rd parameter N specifies
 // the number of sampled bootstraps to use; 1000 is recommended, but 500 is good enough
 // for testing.