Fix data_count metrics

test_build.sh:
Set the correct type for the data_count metrics.

test_build.sh

@@ -20,7 +20,7 @@ done
   printf '# TYPE artifact_mebibytes gauge\n'
   printf 'artifact_mebibytes{name="foo",description="Size of foo"} 500\n'
   printf 'artifact_mebibytes{name="bar",description="Size of bar"} 1000\n'
-  printf '# TYPE package_count summary\n'
+  printf '# TYPE data_count summary\n'
   printf 'data_count{name="foo",description="Amount of foo"} 100\n'
   printf 'data_count{name="bar",description="Amount of bar"} 200\n'
 } > output/metrics.txt