Update HTML report heading.

Author: elprans

report/report.html

@@ -70,10 +70,10 @@
 
 <p><em>${__BENCHMARK_DATE__}</em></p>
 
-<h1>Server Performance Benchmark Report</h1>
+<h1>PostgreSQL Driver Performance Benchmark Report</h1>
 
 Below are the results of testing PostgreSQL client driver implementations.
-Each server is constrained to run in a single process.
+Each client is constrained to run in a single process.
 
 Test environment: ${__BENCHMARK_PLATFORM__}.