hubolib: Make the site benchmark output more compact

So you can do and get:

```
▶ ./benchSite.sh "YAML,num_pages=10"
Running with BenchmarkSiteBuilding/YAML,num_pages=10
BenchmarkSiteBuilding/YAML,num_pages=10-4                 1000       1611261 ns/op      730749 B/op        6458 allocs/op
PASS
ok      github.com/spf13/hugo/hugolib    8.168s
```

1 files changed, 2 insertions, 2 deletions

diff --git a/benchSite.sh b/benchSite.sh
index c59453336..78a01c6ab 100755
--- a/benchSite.sh
+++ b/benchSite.sh
@@ -1,9 +1,9 @@
 #!/bin/bash
 
-# Send in a regexp mathing the benchmarks you want to run, i.e. './benchSite.sh "frontmatter=YAML"'. 
+# Send in a regexp mathing the benchmarks you want to run, i.e. './benchSite.sh "YAML"'. 
 # Note the quotes, which will be needed for more complex expressions.
 # The above will run all variations, but only for front matter YAML.
 
 echo "Running with BenchmarkSiteBuilding/${1}"
 
-go test -run="NONE" -bench="BenchmarkSiteBuilding/${1}" -test.benchmem=true ./hugolib
\ No newline at end of file
+go test -run="NONE" -bench="BenchmarkSiteBuilding/${1}$" -test.benchmem=true ./hugolib
\ No newline at end of file