internal/frontend: change default to 25

Change-Id: Ifbdf7e4ed59b0281f4d663cebbeb0c5b938b9a2e
Reviewed-on: https://go-review.googlesource.com/c/pkgsite/+/347590
Trust: Julie Qiu <julie@golang.org>
Run-TryBot: Julie Qiu <julie@golang.org>
Reviewed-by: Jonathan Amsterdam <jba@google.com>
diff --git a/internal/frontend/search.go b/internal/frontend/search.go
index 5970f96..5745c86 100644
--- a/internal/frontend/search.go
+++ b/internal/frontend/search.go
@@ -30,7 +30,7 @@
 	"golang.org/x/text/message"
 )
 
-const defaultSearchLimit = 10
+const defaultSearchLimit = 25
 
 // SearchPage contains all of the data that the search template needs to
 // populate.